InforWiki 2014 - User contributions [en]

Types of memory

2017-12-15T06:37:34Z

Carlosmunozrodero:

== What is memory? ==
In computer science, the memory is the device that retains, memorizes or stores computer data for some period of time. Memory provides one of the main functions of modern computing: the storage of information and knowledge. It is one of the fundamental components of the computer, which interconnected to the central processing unit and the input / output devices, implement the fundamentals of the computer model of the von Neumann architecture.

Currently, "memory" usually refers to a form of solid-state storage, known as RAM, and sometimes refers to other forms of rapid, but temporary, storage. Similarly, it refers to forms of mass storage, such as optical disks, and types of magnetic storage, such as hard drives and other types of storage, slower than RAM, but of a more permanent nature. These contemporary distinctions are helpful, because they are fundamental to computer architecture in general.

== History ==

At the beginning of the computers, the concept of memory was very different from the current one and even the design of it differs from the modern and compact one that now includes your PC or Mac. First the vacuum tubes were used and then came the transistors that were the causing computers to stop occupying the space of a football field to enter a room.

The arrival of the transistor changed the concept of computing completely, in essence it is a microscopic vacuum tube that saves energy and does not dissipate so much heat. It was here that the second era of computers began followed by the third era with integrated circuits and the fourth era with microprocessors.

[[File:ordenadorantiguo.jpg]]

== Types of memory ==

-'''Pen drive'''

The USB memory also called memory stick, USB stick, external memory, pen drive or pendrive is a type of data storage device that uses flash memory to store data and information.

-'''Hard disk '''

In computer science, the unit of hard disk or hard disk drive (in English: Hard Disk Drive, HDD) is the device of storage of data that uses a system of magnetic recording to store digital files. It consists of one or more plates or rigid discs, joined by a same axis that rotates at high speed inside a sealed metal box. On each plate, and on each of its faces, there is a read / write head that floats on a thin sheet of air generated by the rotation of the discs. It is non-volatile memory.

-'''Random access memory'''

Random access memory (RAM) is used as working memory of computers for the operating system, programs and most of the software. All the instructions executed by the central processing unit and other units of the computer are loaded into the RAM.

-'''Memory of only reading'''

The read-only memory, also known as ROM (acronym in English of read-only memory), is a storage medium used in computers and electronic devices, which allows only the reading of information and not its writing, regardless of the presence or not from a source of energy. This is not a sequential access memory.

-'''Flash memory'''

The flash memory derived from the acronym EEPROM allows the reading and writing of multiple memory locations in the same operation. Thanks to this, the flash technology, always using electrical impulses, allows much higher operating speeds compared to the original EEPROM technology, which only allowed to act on a single memory cell in each programming operation. It is the technology used in devices called USB memory.

[[File:Pendrive.jpg]]

== Characteristics of memory ==

The division between primary, secondary, tertiary, off-line, is based on the hierarchy of memory or distance from the CPU. There are other ways to characterize the different types of memory.
Volatility of information
Photo of DDR type RAM memory installed in its socket.

Volatile memory requires constant power to keep the information stored. Volatile memory is usually used only in primary memories. RAM is a volatile memory, as it loses information in the lack of electrical power.

The non-volatile memory will retain the stored information even if it does not receive electrical power constantly, as is the case with ROM. It is used for long-term storage and, therefore, it is used in secondary, tertiary and off-line memories.

<youtube>e3fJTXhmaJI</youtube>

Types of memory

2017-12-15T06:35:51Z

Carlosmunozrodero: /* History */

File:Ordenadorantiguo.jpg

2017-12-15T06:35:25Z

Carlosmunozrodero:

File:Pendrive.jpg

2017-12-15T06:34:54Z

Carlosmunozrodero:

Types of memory

2017-12-15T06:34:17Z

Carlosmunozrodero:

== What is memory? ==
In computer science, the memory is the device that retains, memorizes or stores computer data for some period of time. Memory provides one of the main functions of modern computing: the storage of information and knowledge. It is one of the fundamental components of the computer, which interconnected to the central processing unit and the input / output devices, implement the fundamentals of the computer model of the von Neumann architecture.

Currently, "memory" usually refers to a form of solid-state storage, known as RAM, and sometimes refers to other forms of rapid, but temporary, storage. Similarly, it refers to forms of mass storage, such as optical disks, and types of magnetic storage, such as hard drives and other types of storage, slower than RAM, but of a more permanent nature. These contemporary distinctions are helpful, because they are fundamental to computer architecture in general.

== History ==

At the beginning of the computers, the concept of memory was very different from the current one and even the design of it differs from the modern and compact one that now includes your PC or Mac. First the vacuum tubes were used and then came the transistors that were the causing computers to stop occupying the space of a football field to enter a room.

The arrival of the transistor changed the concept of computing completely, in essence it is a microscopic vacuum tube that saves energy and does not dissipate so much heat. It was here that the second era of computers began followed by the third era with integrated circuits and the fourth era with microprocessors.

== Types of memory ==

-'''Pen drive'''

The USB memory also called memory stick, USB stick, external memory, pen drive or pendrive is a type of data storage device that uses flash memory to store data and information.

-'''Hard disk '''

In computer science, the unit of hard disk or hard disk drive (in English: Hard Disk Drive, HDD) is the device of storage of data that uses a system of magnetic recording to store digital files. It consists of one or more plates or rigid discs, joined by a same axis that rotates at high speed inside a sealed metal box. On each plate, and on each of its faces, there is a read / write head that floats on a thin sheet of air generated by the rotation of the discs. It is non-volatile memory.

-'''Random access memory'''

Random access memory (RAM) is used as working memory of computers for the operating system, programs and most of the software. All the instructions executed by the central processing unit and other units of the computer are loaded into the RAM.

-'''Memory of only reading'''

The read-only memory, also known as ROM (acronym in English of read-only memory), is a storage medium used in computers and electronic devices, which allows only the reading of information and not its writing, regardless of the presence or not from a source of energy. This is not a sequential access memory.

-'''Flash memory'''

The flash memory derived from the acronym EEPROM allows the reading and writing of multiple memory locations in the same operation. Thanks to this, the flash technology, always using electrical impulses, allows much higher operating speeds compared to the original EEPROM technology, which only allowed to act on a single memory cell in each programming operation. It is the technology used in devices called USB memory.

[[File:Pendrive.jpg]]

== Characteristics of memory ==

The division between primary, secondary, tertiary, off-line, is based on the hierarchy of memory or distance from the CPU. There are other ways to characterize the different types of memory.
Volatility of information
Photo of DDR type RAM memory installed in its socket.

Volatile memory requires constant power to keep the information stored. Volatile memory is usually used only in primary memories. RAM is a volatile memory, as it loses information in the lack of electrical power.

The non-volatile memory will retain the stored information even if it does not receive electrical power constantly, as is the case with ROM. It is used for long-term storage and, therefore, it is used in secondary, tertiary and off-line memories.

Types of memory

2017-12-15T06:31:16Z

Carlosmunozrodero: /* Types of memory */

== What is memory? ==
In computer science, the memory is the device that retains, memorizes or stores computer data for some period of time. Memory provides one of the main functions of modern computing: the storage of information and knowledge. It is one of the fundamental components of the computer, which interconnected to the central processing unit and the input / output devices, implement the fundamentals of the computer model of the von Neumann architecture.

Currently, "memory" usually refers to a form of solid-state storage, known as RAM, and sometimes refers to other forms of rapid, but temporary, storage. Similarly, it refers to forms of mass storage, such as optical disks, and types of magnetic storage, such as hard drives and other types of storage, slower than RAM, but of a more permanent nature. These contemporary distinctions are helpful, because they are fundamental to computer architecture in general.

== History ==

At the beginning of the computers, the concept of memory was very different from the current one and even the design of it differs from the modern and compact one that now includes your PC or Mac. First the vacuum tubes were used and then came the transistors that were the causing computers to stop occupying the space of a football field to enter a room.

The arrival of the transistor changed the concept of computing completely, in essence it is a microscopic vacuum tube that saves energy and does not dissipate so much heat. It was here that the second era of computers began followed by the third era with integrated circuits and the fourth era with microprocessors.

== Types of memory ==

-'''Pen drive'''

The USB memory also called memory stick, USB stick, external memory, pen drive or pendrive is a type of data storage device that uses flash memory to store data and information.

-'''Hard disk '''

In computer science, the unit of hard disk or hard disk drive (in English: Hard Disk Drive, HDD) is the device of storage of data that uses a system of magnetic recording to store digital files. It consists of one or more plates or rigid discs, joined by a same axis that rotates at high speed inside a sealed metal box. On each plate, and on each of its faces, there is a read / write head that floats on a thin sheet of air generated by the rotation of the discs. It is non-volatile memory.

-'''Random access memory'''

Random access memory (RAM) is used as working memory of computers for the operating system, programs and most of the software. All the instructions executed by the central processing unit and other units of the computer are loaded into the RAM.

-'''Memory of only reading'''

The read-only memory, also known as ROM (acronym in English of read-only memory), is a storage medium used in computers and electronic devices, which allows only the reading of information and not its writing, regardless of the presence or not from a source of energy. This is not a sequential access memory.

-'''Flash memory'''

The flash memory derived from the acronym EEPROM allows the reading and writing of multiple memory locations in the same operation. Thanks to this, the flash technology, always using electrical impulses, allows much higher operating speeds compared to the original EEPROM technology, which only allowed to act on a single memory cell in each programming operation. It is the technology used in devices called USB memory.

== Characteristics of memory ==

The division between primary, secondary, tertiary, off-line, is based on the hierarchy of memory or distance from the CPU. There are other ways to characterize the different types of memory.
Volatility of information
Photo of DDR type RAM memory installed in its socket.

Volatile memory requires constant power to keep the information stored. Volatile memory is usually used only in primary memories. RAM is a volatile memory, as it loses information in the lack of electrical power.

The non-volatile memory will retain the stored information even if it does not receive electrical power constantly, as is the case with ROM. It is used for long-term storage and, therefore, it is used in secondary, tertiary and off-line memories.

Types of memory

2017-12-14T12:23:42Z

Carlosmunozrodero:

== What is memory? ==
In computer science, the memory is the device that retains, memorizes or stores computer data for some period of time. Memory provides one of the main functions of modern computing: the storage of information and knowledge. It is one of the fundamental components of the computer, which interconnected to the central processing unit and the input / output devices, implement the fundamentals of the computer model of the von Neumann architecture.

Currently, "memory" usually refers to a form of solid-state storage, known as RAM, and sometimes refers to other forms of rapid, but temporary, storage. Similarly, it refers to forms of mass storage, such as optical disks, and types of magnetic storage, such as hard drives and other types of storage, slower than RAM, but of a more permanent nature. These contemporary distinctions are helpful, because they are fundamental to computer architecture in general.

== History ==

At the beginning of the computers, the concept of memory was very different from the current one and even the design of it differs from the modern and compact one that now includes your PC or Mac. First the vacuum tubes were used and then came the transistors that were the causing computers to stop occupying the space of a football field to enter a room.

The arrival of the transistor changed the concept of computing completely, in essence it is a microscopic vacuum tube that saves energy and does not dissipate so much heat. It was here that the second era of computers began followed by the third era with integrated circuits and the fourth era with microprocessors.

== Types of memory ==

-'''Pen drive'''

The USB memory also called memory stick, USB stick, external memory, pen drive or pendrive is a type of data storage device that uses flash memory to store data and information.

-'''Hard disk '''

En informática, la unidad de disco duro o unidad de disco rígido (en inglés: Hard Disk Drive, HDD) es el dispositivo de almacenamiento de datos que emplea un sistema de grabación magnética para almacenar archivos digitales. Se compone de uno o más platos o discos rígidos, unidos por un mismo eje que gira a gran velocidad dentro de una caja metálica sellada. Sobre cada plato, y en cada una de sus caras, se sitúa un cabezal de lectura/escritura que flota sobre una delgada lámina de aire generada por la rotación de los discos. Es memoria no volátil.

-'''Random access memory'''

Random access memory (RAM) is used as working memory of computers for the operating system, programs and most of the software. All the instructions executed by the central processing unit and other units of the computer are loaded into the RAM.

-'''Memory of only reading'''

The read-only memory, also known as ROM (acronym in English of read-only memory), is a storage medium used in computers and electronic devices, which allows only the reading of information and not its writing, regardless of the presence or not from a source of energy. This is not a sequential access memory.

-'''Flash memory'''

The flash memory derived from the acronym EEPROM allows the reading and writing of multiple memory locations in the same operation. Thanks to this, the flash technology, always using electrical impulses, allows much higher operating speeds compared to the original EEPROM technology, which only allowed to act on a single memory cell in each programming operation. It is the technology used in devices called USB memory.

== Characteristics of memory ==

The division between primary, secondary, tertiary, off-line, is based on the hierarchy of memory or distance from the CPU. There are other ways to characterize the different types of memory.
Volatility of information
Photo of DDR type RAM memory installed in its socket.

Volatile memory requires constant power to keep the information stored. Volatile memory is usually used only in primary memories. RAM is a volatile memory, as it loses information in the lack of electrical power.

The non-volatile memory will retain the stored information even if it does not receive electrical power constantly, as is the case with ROM. It is used for long-term storage and, therefore, it is used in secondary, tertiary and off-line memories.

Types of memory

2017-12-14T12:20:46Z

Carlosmunozrodero:

== What is memory? ==
In computer science, the memory is the device that retains, memorizes or stores computer data for some period of time. Memory provides one of the main functions of modern computing: the storage of information and knowledge. It is one of the fundamental components of the computer, which interconnected to the central processing unit and the input / output devices, implement the fundamentals of the computer model of the von Neumann architecture.

Currently, "memory" usually refers to a form of solid-state storage, known as RAM, and sometimes refers to other forms of rapid, but temporary, storage. Similarly, it refers to forms of mass storage, such as optical disks, and types of magnetic storage, such as hard drives and other types of storage, slower than RAM, but of a more permanent nature. These contemporary distinctions are helpful, because they are fundamental to computer architecture in general.

== History ==

At the beginning of the computers, the concept of memory was very different from the current one and even the design of it differs from the modern and compact one that now includes your PC or Mac. First the vacuum tubes were used and then came the transistors that were the causing computers to stop occupying the space of a football field to enter a room.

The arrival of the transistor changed the concept of computing completely, in essence it is a microscopic vacuum tube that saves energy and does not dissipate so much heat. It was here that the second era of computers began followed by the third era with integrated circuits and the fourth era with microprocessors.

== Types of memory ==

-'''Pen drive'''

The USB memory also called memory stick, USB stick, external memory, pen drive or pendrive is a type of data storage device that uses flash memory to store data and information.
[[File:File:Sony-usm32gr-b2-in-31301912-original-imaeksnuhb4ytpp8.jpeg]]

-'''Random access memory'''

Random access memory (RAM) is used as working memory of computers for the operating system, programs and most of the software. All the instructions executed by the central processing unit and other units of the computer are loaded into the RAM.

-'''Memory of only reading'''

The read-only memory, also known as ROM (acronym in English of read-only memory), is a storage medium used in computers and electronic devices, which allows only the reading of information and not its writing, regardless of the presence or not from a source of energy. This is not a sequential access memory.

-'''Flash memory'''

The flash memory derived from the acronym EEPROM allows the reading and writing of multiple memory locations in the same operation. Thanks to this, the flash technology, always using electrical impulses, allows much higher operating speeds compared to the original EEPROM technology, which only allowed to act on a single memory cell in each programming operation. It is the technology used in devices called USB memory.

== Characteristics of memory ==

The division between primary, secondary, tertiary, off-line, is based on the hierarchy of memory or distance from the CPU. There are other ways to characterize the different types of memory.
Volatility of information
Photo of DDR type RAM memory installed in its socket.

Volatile memory requires constant power to keep the information stored. Volatile memory is usually used only in primary memories. RAM is a volatile memory, as it loses information in the lack of electrical power.

The non-volatile memory will retain the stored information even if it does not receive electrical power constantly, as is the case with ROM. It is used for long-term storage and, therefore, it is used in secondary, tertiary and off-line memories.

Types of memory

2017-12-14T12:18:11Z

Carlosmunozrodero: /* Types of memory */

== What is memory? ==
In computer science, the memory is the device that retains, memorizes or stores computer data for some period of time. Memory provides one of the main functions of modern computing: the storage of information and knowledge. It is one of the fundamental components of the computer, which interconnected to the central processing unit and the input / output devices, implement the fundamentals of the computer model of the von Neumann architecture.

Currently, "memory" usually refers to a form of solid-state storage, known as RAM, and sometimes refers to other forms of rapid, but temporary, storage. Similarly, it refers to forms of mass storage, such as optical disks, and types of magnetic storage, such as hard drives and other types of storage, slower than RAM, but of a more permanent nature. These contemporary distinctions are helpful, because they are fundamental to computer architecture in general.

== History ==

At the beginning of the computers, the concept of memory was very different from the current one and even the design of it differs from the modern and compact one that now includes your PC or Mac. First the vacuum tubes were used and then came the transistors that were the causing computers to stop occupying the space of a football field to enter a room.

The arrival of the transistor changed the concept of computing completely, in essence it is a microscopic vacuum tube that saves energy and does not dissipate so much heat. It was here that the second era of computers began followed by the third era with integrated circuits and the fourth era with microprocessors.

== Types of memory ==

-'''Pen drive'''

The USB memory also called memory stick, USB stick, external memory, pen drive or pendrive is a type of data storage device that uses flash memory to store data and information.
[[File:https://static.fnac-static.com/multimedia/Images/ES/NR/4.jpg]]

-'''Random access memory'''

Random access memory (RAM) is used as working memory of computers for the operating system, programs and most of the software. All the instructions executed by the central processing unit and other units of the computer are loaded into the RAM.

-'''Memory of only reading'''

The read-only memory, also known as ROM (acronym in English of read-only memory), is a storage medium used in computers and electronic devices, which allows only the reading of information and not its writing, regardless of the presence or not from a source of energy. This is not a sequential access memory.

-'''Flash memory'''

The flash memory derived from the acronym EEPROM allows the reading and writing of multiple memory locations in the same operation. Thanks to this, the flash technology, always using electrical impulses, allows much higher operating speeds compared to the original EEPROM technology, which only allowed to act on a single memory cell in each programming operation. It is the technology used in devices called USB memory.

== Characteristics of memory ==

The division between primary, secondary, tertiary, off-line, is based on the hierarchy of memory or distance from the CPU. There are other ways to characterize the different types of memory.
Volatility of information
Photo of DDR type RAM memory installed in its socket.

Volatile memory requires constant power to keep the information stored. Volatile memory is usually used only in primary memories. RAM is a volatile memory, as it loses information in the lack of electrical power.

The non-volatile memory will retain the stored information even if it does not receive electrical power constantly, as is the case with ROM. It is used for long-term storage and, therefore, it is used in secondary, tertiary and off-line memories.

File:Sony-usm32gr-b2-in-31301912-original-imaeksnuhb4ytpp8.jpeg

2017-12-14T12:16:22Z

Carlosmunozrodero: Pendrive example

Pendrive example

Types of memory

2017-12-14T12:09:13Z

Carlosmunozrodero: /* Characteristics of memory */

== What is memory? ==
In computer science, the memory is the device that retains, memorizes or stores computer data for some period of time. Memory provides one of the main functions of modern computing: the storage of information and knowledge. It is one of the fundamental components of the computer, which interconnected to the central processing unit and the input / output devices, implement the fundamentals of the computer model of the von Neumann architecture.

Currently, "memory" usually refers to a form of solid-state storage, known as RAM, and sometimes refers to other forms of rapid, but temporary, storage. Similarly, it refers to forms of mass storage, such as optical disks, and types of magnetic storage, such as hard drives and other types of storage, slower than RAM, but of a more permanent nature. These contemporary distinctions are helpful, because they are fundamental to computer architecture in general.

== History ==

At the beginning of the computers, the concept of memory was very different from the current one and even the design of it differs from the modern and compact one that now includes your PC or Mac. First the vacuum tubes were used and then came the transistors that were the causing computers to stop occupying the space of a football field to enter a room.

The arrival of the transistor changed the concept of computing completely, in essence it is a microscopic vacuum tube that saves energy and does not dissipate so much heat. It was here that the second era of computers began followed by the third era with integrated circuits and the fourth era with microprocessors.

== Types of memory ==

-'''Pen drive'''

The USB memory also called memory stick, USB stick, external memory, pen drive or pendrive is a type of data storage device that uses flash memory to store data and information.

-'''Random access memory'''

Random access memory (RAM) is used as working memory of computers for the operating system, programs and most of the software. All the instructions executed by the central processing unit and other units of the computer are loaded into the RAM.

-'''Memory of only reading'''

The read-only memory, also known as ROM (acronym in English of read-only memory), is a storage medium used in computers and electronic devices, which allows only the reading of information and not its writing, regardless of the presence or not from a source of energy. This is not a sequential access memory.

-'''Flash memory'''

The flash memory derived from the acronym EEPROM allows the reading and writing of multiple memory locations in the same operation. Thanks to this, the flash technology, always using electrical impulses, allows much higher operating speeds compared to the original EEPROM technology, which only allowed to act on a single memory cell in each programming operation. It is the technology used in devices called USB memory.

== Characteristics of memory ==

The division between primary, secondary, tertiary, off-line, is based on the hierarchy of memory or distance from the CPU. There are other ways to characterize the different types of memory.
Volatility of information
Photo of DDR type RAM memory installed in its socket.

Volatile memory requires constant power to keep the information stored. Volatile memory is usually used only in primary memories. RAM is a volatile memory, as it loses information in the lack of electrical power.

The non-volatile memory will retain the stored information even if it does not receive electrical power constantly, as is the case with ROM. It is used for long-term storage and, therefore, it is used in secondary, tertiary and off-line memories.

Types of memory

2017-12-14T12:08:40Z

Carlosmunozrodero: Created page with "== What is memory? == In computer science, the memory is the device that retains, memorizes or stores computer data for some period of time. Memory provides one of the main fu..."

== What is memory? ==
In computer science, the memory is the device that retains, memorizes or stores computer data for some period of time. Memory provides one of the main functions of modern computing: the storage of information and knowledge. It is one of the fundamental components of the computer, which interconnected to the central processing unit and the input / output devices, implement the fundamentals of the computer model of the von Neumann architecture.

Currently, "memory" usually refers to a form of solid-state storage, known as RAM, and sometimes refers to other forms of rapid, but temporary, storage. Similarly, it refers to forms of mass storage, such as optical disks, and types of magnetic storage, such as hard drives and other types of storage, slower than RAM, but of a more permanent nature. These contemporary distinctions are helpful, because they are fundamental to computer architecture in general.

== History ==

At the beginning of the computers, the concept of memory was very different from the current one and even the design of it differs from the modern and compact one that now includes your PC or Mac. First the vacuum tubes were used and then came the transistors that were the causing computers to stop occupying the space of a football field to enter a room.

The arrival of the transistor changed the concept of computing completely, in essence it is a microscopic vacuum tube that saves energy and does not dissipate so much heat. It was here that the second era of computers began followed by the third era with integrated circuits and the fourth era with microprocessors.

== Types of memory ==

-'''Pen drive'''

The USB memory also called memory stick, USB stick, external memory, pen drive or pendrive is a type of data storage device that uses flash memory to store data and information.

-'''Random access memory'''

Random access memory (RAM) is used as working memory of computers for the operating system, programs and most of the software. All the instructions executed by the central processing unit and other units of the computer are loaded into the RAM.

-'''Memory of only reading'''

The read-only memory, also known as ROM (acronym in English of read-only memory), is a storage medium used in computers and electronic devices, which allows only the reading of information and not its writing, regardless of the presence or not from a source of energy. This is not a sequential access memory.

-'''Flash memory'''

The flash memory derived from the acronym EEPROM allows the reading and writing of multiple memory locations in the same operation. Thanks to this, the flash technology, always using electrical impulses, allows much higher operating speeds compared to the original EEPROM technology, which only allowed to act on a single memory cell in each programming operation. It is the technology used in devices called USB memory.

== Characteristics of memory ==

The division between primary, secondary, tertiary, off-line, is based on the hierarchy of memory or distance from the CPU. There are other ways to characterize the different types of memory.
Volatility of information
Photo of DDR type RAM memory installed in its socket.

Volatile memory requires constant power to keep the information stored. Volatile memory is usually used only in primary memories. RAM is a volatile memory, as it loses information in the lack of electrical power.

The non-volatile memory will retain the stored information even if it does not receive electrical power constantly, as is the case with ROM. It is used for long-term storage and, therefore, it is used in secondary, tertiary and off-line memories.

Memory

2017-12-14T12:02:35Z

Carlosmunozrodero: /* Types */

(description memory)
=Types=
n computer science, the memory is the device that retains, memorizes or stores computer data for some period of time. Memory provides one of the main functions of modern computing: the storage of information and knowledge. It is one of the fundamental components of the computer, which interconnected to the central processing unit and the input / output devices, implement the fundamentals of the computer model of the von Neumann architecture.

Currently, "memory" usually refers to a form of solid-state storage, known as RAM, and sometimes refers to other forms of rapid, but temporary, storage. Similarly, it refers to forms of mass storage, such as optical disks, and types of magnetic storage, such as hard drives and other types of storage, slower than RAM, but of a more permanent nature. These contemporary distinctions are helpful, because they are fundamental to computer architecture in general.

== History ==

At the beginning of the computers, the concept of memory was very different from the current one and even the design of it differs from the modern and compact one that now includes your PC or Mac. First the vacuum tubes were used and then came the transistors that were the causing computers to stop occupying the space of a football field to enter a room.

The arrival of the transistor changed the concept of computing completely, in essence it is a microscopic vacuum tube that saves energy and does not dissipate so much heat. It was here that the second era of computers began followed by the third era with integrated circuits and the fourth era with microprocessors.

'''Pen drive'''

The USB stick was invented in 1998 by IBM, but it was not patented by him. Its objective was to replace floppy disks with much more capacity and speed of data transmission. Although currently in a CD or DVD you can store memory to then erase and manipulate it, the most comfortable and used are USB memories. They are small devices the size of a lighter that act almost the same as a floppy disk, but with a much larger capacity, which currently range from 64 mb to several gigabytes. Its main advantage is its small size, its resistance and its transmission speed, much faster than floppy disks.

Currently this type of device is very fashionable, especially among young people or clerks, because thanks to its small size and shape can be hung as a keychain for example, and most importantly, with operating systems, you just have to connect it to the computer and use it without further complications. In addition there are other devices such as MP3 players that use the same features. They can store any type of data, but their main characteristic is that the music files in mp3 and wma format above all, are recognized and processed to be heard through headphones connected to the device. This is, then, a substitute for the Walkman. But also new designs are appearing that are capable of storing dozens of gigabytes and video, which can be viewed with a small screen.

== Types of memory ==

-'''Pen drive'''

The USB memory also called memory stick, USB stick, external memory, pen drive or pendrive is a type of data storage device that uses flash memory to store data and information.

-'''Random access memory'''

Random access memory (RAM) is used as working memory of computers for the operating system, programs and most of the software. All the instructions executed by the central processing unit and other units of the computer are loaded into the RAM.

-'''Memory of only reading'''

The read-only memory, also known as ROM (acronym in English of read-only memory), is a storage medium used in computers and electronic devices, which allows only the reading of information and not its writing, regardless of the presence or not from a source of energy. This is not a sequential access memory.

-'''Flash memory'''

The flash memory derived from the acronym EEPROM allows the reading and writing of multiple memory locations in the same operation. Thanks to this, the flash technology, always using electrical impulses, allows much higher operating speeds compared to the original EEPROM technology, which only allowed to act on a single memory cell in each programming operation. It is the technology used in devices called USB memory.

=Evolution=

=Prices in the market=

=Links to online shops (U.K and U.S)=

=4 questions=

Memoria

2017-12-14T12:01:03Z

Carlosmunozrodero: Blanked the page

Sector Cauternario

2017-11-02T21:34:10Z

Carlosmunozrodero:

=='''''¿QUÉ ES?'''''==

[[File:sector_cuaternario.png|left|300px|]]-El sector cuaternario es una parte de la economía cuya característica es estar basado en el conocimiento e incluir servicios imposibles de mecanizar, tales como la generación e intercambio de información, tecnología, consultoría, educación, investigación y desarrollo, planificación financiera y otros servicios o actividades principalmente intelectuales. El término se ha utilizado asimismo para describir a los medios de comunicación, la cultura y el gobierno: puede ser clave en el desarrollo de una mejor juventud ya que incluye también la educación.

-En el sector cuaternario, las empresas invierten para asegurar una mayor expansión, lo que se ve como un medio de generar mayores márgenes o rentabilidad de las inversiones. La investigación se dirige hacia la reducción de costes, aprovechamiento de los mercados, la producción de ideas innovadoras, nuevos métodos de producción y métodos de fabricación, entre otros. Para muchos sectores, como la industria farmacéutica, dicho sector es el de más alto valor añadido, ya que crea futuros productos de la marca de los que se beneficiará en un futuro la empresa.

-El sector cuaternario incluye las actividades vinculadas al desarrollo y la investigación de nuevas tecnologías. Estas tecnologías de punta se aplican a todos los sectores de la economía y llevan la delantera en la investigación científico-tecnológica; son, por ejemplo, la microelectrónica, la informática, la robótica, la industria aeroespacial, las telecomunicaciones y la biotecnología. Este sector requiere de importantes inversiones en capital humano para cubrir los sueldos y los honorarios de los empleados, que tienen una alta capacitación.

-Video de ayuda:

<youtube width="2000" height="1200">EmtmCcFE1h4</youtube>

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=='''''PROFESIONES QUE HAN APARECIDO GRACIAS A ÉL'''''==

-Este cuarto sector incluye servicios altamente intelectuales de la investigación, el desarrollo, la innovación y la información, como asesoría, programación, consultoría o docencia, especialmente universitaria.

-La mayoría encuadran en él aquellas empresas e instituciones que prestan servicios relacionados con la tecnología más puntera, como la informática y las TIC (tecnologías de información y comunicación), la robótica, la domótica, la telemática, la consultoría (asesoría para empresas) y de la I+D+I (investigación, particularmente en los campos científicos).

-Algunos ejemplos más concretos son:
#Ingeniero informático
#Gerente de negocios
#Técnico arquitecto junior
#Diseñador grafico
#Diseñador senior
#Gerente de proyecto
#Especialista en soporte de escritorio
#Diseñador web

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=='''''PREGUNTAS'''''==

1. ¿Se te ocurre algún otro trabajo que incluir? (5 Jesus)

2. ¿Te parece un sector importante?¿Por qué? (Carlos)

Es un sector importante, ya que la tecnología al igual que el tiempo siempre está en avance, los robots sustituirán trabajos manuales, y se crearan mas puestos de empleo para ingenieros, programadores, etc. La era de hoy necesita estos trabajadores del futuro, ya que nos estamos adentrando de lleno en la era digital, donde sin este sector, caería.

3. Si no existiera el sector cuaternario, ¿en qué sector incluirías sus actividades: primario, secundario, terciario? (Cristian)

4. ¿Te parece que este sector tiene más o menos salidas laborales que el resto?¿Por qué? (Andres)

Robots

2017-11-02T21:31:42Z

Carlosmunozrodero: /* PREGUNTAS */

=='''''INFORMACIÓN BÁSICA SOBRE LOS ROBOTS'''''==
[[File:robot.png|left|200px|]]-Un robot es una entidad virtual o mecánica artificial. En la práctica, esto es por lo general un sistema electromecánico que normalmente es conducido por un programa de una computadora o por un circuito eléctrico. Este sistema electromecánico, por su apariencia o sus movimientos, ofrece la sensación de tener un propósito propio. La independencia creada en sus movimientos hace que sus acciones sean la razón de un estudio razonable y profundo en el área de la ciencia y tecnología. La limpieza y el mantenimiento del hogar son cada vez más comunes en los hogares. No obstante, existe una cierta incertidumbre sobre el impacto económico de la automatización y la amenaza del equipamiento robótico, una ansiedad que se ve reflejada en el retrato a menudo perverso y malvado de robots presentes en obras de la cultura popular. Comparados con sus colegas de ficción, los robots reales siguen siendo limitados.
 
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=='''''ROBOTS SORPRENDENTES ACTUALES'''''==
 -Gran parte de las acciones que antes estaban reservadas para los humanos, hoy las realizan robots, haciendo mas sencilla nuestra vida, aunque a veces da miedo pensar que hacen las cosas mejor que nosotros.Hay robots para todo, pero hay algunos que asustan por su capacidad de funcionar sin necesidad que los humanos los estén controlando todo el tiempo, siendo capaces de medir una situación y resolver cuál es la mejor forma de proceder.Conoce estos robots que te van a sorprender:
 
 
'''Atlas'''

 <youtube width="2000" height="1200">zkBnFPBV3f0</youtube>

 -Un robot impresionante, casi como un Terminator. Atlas, está creado para participar en operaciones de rescate o búsqueda y, para ello tiene una fuerza impresionante y, la capacidad de tomar decisiones acerca de cómo proceder.Para funcionar sin requerir que lo controle un humano, posee una computadora interna que recibe y procesa la información que entregan las cámaras y sensores presentes en el robot.

 '''WildCat'''

 <youtube width="2000" height="1200">wE3fmFTtP9g</youtube>

 -Capaz de moverse a más de 25 kilómetros por hora, WildCat puede parecer un poco abultado, pero justamente es esa corpulencia lo que le permite ser de gran ayuda para el uso militar.Corre imitando a los animales y, lo que no tiene en agilidad, si lo posee en rapidez, sobrepasando a los humanos y, gracias a su GPS, es capaz de orientarse por varios kilómetros sin compañía. WildCat, puede cargar más de 180 kilos, suficiente para ser un aliado importante.Si bien casi todos estos robots están pensados para usarse en el campo de batalla, suponen un avance para evitar la perdida de vidas humanas, así como también servir en operaciones de rescate.Muy pronto, este tipo de robots se incorporarán a acciones más cotidianas, utilizando todo lo aprendido en condiciones extremas, para ser compañeros de las personas sin necesidad de tener que intervenir demasiado para que funcionen.

 '''RHex'''

 <youtube width="2000" height="1200">ISznqY3kESI</youtube>

 -De tamaño pequeño, las capacidades de RHex no son para nada inferiores. Capaz de moverse por lugares donde un robot más grande no podría, posee seis piernas con un diseño especiales, lo que le permite escalar y funcionar hasta en los terrones más difíciles.Su tamaño y resistencia hasta a las condiciones más adversas, le permite moverse en zonas de acceso imposible para humanos y otros robots más grandes y, gracias a sus cámaras, entrega una visión a distancia para su control.

 
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=='''''DERECHOS DE LOS ROBOTS Y LEYES DE LA ROBÓTICA'''''==
 -El desarrollo de la AI abre debates morales, no solo económicos. El pasado junio, el Parlamento Europeo hizo llega un documento a la Comisión Europea en donde planteaba que si la inteligencia artificial se vuelve tan potente como la humana, los robots podrían ser objetos de derechos civiles. Pero además, el informe advertía que la AI superará pronto a la inteligencia humana, por lo que si no se establece un coto legal a sus capacidades, la humanidad podría acabar perdiendo el control de su destino.
 
[[File:robotsderechos.jpg|centre|450px|]]

Los conflictos planteados en las populares novelas de ciencia-ficción de Isaac Asimov, bioquímico y literato fallecido en 1992, comienzan a hacerse realidad. En un relato sobre robots de 1942, Asimov estableció sus conocidas tres leyes de la robótica, a las que hoy se vuelve a mirar:

# Un robot no puede dañar a un ser humano ni permitir por inacción que sea dañado.
# Un robot debe obedecer las órdenes de los seres humanos, salvo que entre en conflicto con la primera ley.
# Un robot debe proteger su propia existencia, salvo que vaya contra las dos primeras leyes.

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=='''''PREGUNTAS'''''==
1. ¿Qúe ley de la robótica añadirías tú? (Carlos)

Un robot no puede ser independiente de su creador

2. ¿Crees que deberían tener derechos los robots?¿Por qué? (Cristian)
depende del nivel de inteligencia artificial que tengan. si por ejemplo tenemos un robot que nos hace tostadas para desayunar y no tiene ninguna otra función y su única inteligencia sea saber si poner mermelada o mantequilla, no creo necesario que tenga derechos. pero si se trata de un robot con una inteligencia artificial que le dota de la cualidad de sentir cosas por ejemplo si seria necesario darle ciertos derechos.

3. Si tuvieras que construir un robot, ¿qué función tendría? (Andres)
Aprovecharía la oportunidad y crearía un robot con la función de poder salvar vidas, es decir:
*Que se pueda meter por cualquier terreno a la hora de ir a salvar a alguien.
*Obviamente,también sería impermeable.
*Reconocimiento de voz o de caras de personas, y con el avance de la tecnología, reconocimiento mediante al olfalto.
*Conexión con los servicios de emergias.

4. ¿Estás a favor o en contra de la creación de robots?¿Por qué? (Jesus)
Estoy totalmente a favor de la creacion de los robots inteligentes, siempre y cuando la inteligencia artificial creada tenga como objetivo mejorar la vida de los seres humanos, pero siempre con precauciones como por ejemplo no llegar a crear una inteligencia superios a la de la raza humana.

Randy rhoads

2017-10-05T11:05:31Z

Carlosmunozrodero:

Randy Rhoads was a virtuoso guitarist known for being the guitar player of Ozzy Osbourne in the mid 80's
Is considered to be one of the best and most influential guitarists of all time and it is placed the number 36 by the rolling stones in the list of the 100 guitarists of all time. He played a [[Gibson Les Paul]] and popularized heavy metal and hard rock music

{| class="wikitable"
|+Bandas
|-
|Solo
|Al Principio
|-
|Banda
|Quiet Riot
|-
|Final
|Ozzy Osbourne
|-
|Muerte
|1989
|}

[[File:Randy.jpg]] [[File:Rhoads.jpg]]

<youtube>H-PQeWJ2ZC8</youtube>

Randy rhoads

2017-09-29T10:08:13Z

Carlosmunozrodero:

Randy Rhoads was a virtuoso guitarist known for being the guitar player of Ozzy Osbourne in the mid 80's
Is considered to be one of the best and most influential guitarists of all time and it is placed the number 36 by the rolling stones in the list of the 100 guitarists of all time. He played a [[Gibson Les Paul]] and popularized heavy metal and hard rock music

[[File:Randy.jpg]] [[File:Rhoads.jpg]]

<youtube>H-PQeWJ2ZC8</youtube>

File:Rhoads.jpg

2017-09-29T10:07:43Z

Carlosmunozrodero:

Randy rhoads

2017-09-29T10:03:25Z

Carlosmunozrodero:

Randy rhoads

2017-09-28T11:10:55Z

Carlosmunozrodero:

Randy rhoads

2017-09-28T11:10:15Z

Carlosmunozrodero:

File:Randy.jpg

2017-09-28T11:09:35Z

Carlosmunozrodero:

Randy rhoads

2017-09-28T11:07:40Z

Carlosmunozrodero:

Randy rhoads

2017-09-28T11:07:17Z

Carlosmunozrodero:

Gibson Les Paul

2017-09-28T11:05:24Z

Carlosmunozrodero: Created page with "The Gibson Les Paul is one of the best guitars ever made by the luthier Les Paul and made by Gibson File:Gibson.jpg"

The Gibson Les Paul is one of the best guitars ever made by the luthier Les Paul and made by Gibson
[[File:Gibson.jpg]]

File:Gibson.jpg

2017-09-28T11:01:13Z

Carlosmunozrodero:

Randy rhoads

2017-09-28T10:53:07Z

Carlosmunozrodero:

Randy rhoads

2017-09-22T12:27:55Z

Carlosmunozrodero: Created page with "Randy Rhoads was a virtuoso guitarist known for being the guitar player of Ozzy Osbourne in the mid 80's"

Randy Rhoads was a virtuoso guitarist known for being the guitar player of Ozzy Osbourne in the mid 80's

Isabel la Católica

2017-09-22T11:58:38Z

Carlosmunozrodero:

Es una reina muy famosa y muy muy guapa