InforWiki 2014 - User contributions [en]

Floppy disk drive

2014-12-04T20:40:00Z

Juampa: Created page with "== Floppy Disk Drive == Floppy disk drive is a computer disk drive that enables a user to save data to removable diskettes. Although 8" disk drives were first made available..."

== Floppy Disk Drive ==
Floppy disk drive is a computer disk drive that enables a user to save data to removable diskettes. Although 8" disk drives were first made available in 1971, the first real disk drives used were the 5 1/4" floppy disk drives, which were later replaced with 3 1/2" floppy disk drives. Today, because of the limited capacity and reliability of floppy diskettes many computers no longer come equipped with floppy disk drives and are being replaced with CD-R, other writable discs, and flash drives.
[[File:Floppy.jpg|300px|]]
== Prices ==

---- '''Fixed'''
Disquetera Floppy Disk Drive 3.5" 1,44 Mb Interna IDE Negro Negra -> 5,68€
[[File:Fd.jpg|250px|]]

---- '''USB'''
Fujitsu Floppy DRIVE USB, NEC Disquetera USB Externa P/N 134-508086-031-0 S/N B114CHN1633 -> 22,99€
[[File:Usb.jpg|250px|]]

File:Usb.jpg

2014-12-04T20:33:23Z

Juampa:

File:Fd.JPG

2014-12-04T20:27:06Z

Juampa: Juampa uploaded a new version of "File:Fd.JPG"

File:Fd.JPG

2014-12-04T20:26:58Z

Juampa:

File:Floppy.jpg

2014-12-04T20:21:24Z

Juampa: Juampa uploaded a new version of "File:Floppy.jpg"

File:Floppy.jpg

2014-12-04T20:21:03Z

Juampa:

Barcode reader

2014-12-04T20:07:29Z

Juampa: Created page with " == Barcode Reader == A barcode reader also know as barcode scanner is an electronic device for reading printed barcodes, it consists of a light source, a lens and a light s..."

== Barcode Reader ==

A barcode reader also know as barcode scanner is an electronic device for reading printed barcodes, it consists of a light source, a lens and a light sensor translating optical impulses into electrical ones.
[[File:manual-barcode-reader-laser-4980-5796485.jpg|350px|]]

== Types Of Barcode Reader ==

---- '''Pen-type readers'''
Pen-type readers consist of a light source and photodiode that are placed next to each other in the tip of a pen or wand.
[[File:Pen.jpg|250px|]]

---- '''Laser scanners'''
Laser scanners work the same way as pen type readers except that they use a laser beam as the light source and typically employ either a reciprocating mirror or a rotating prism to scan the laser beam back and forth across the bar code.
[[File:Laser.jpg|250px|]]

---- '''CCD readers'''
CCD readers use an array of hundreds of tiny light sensors lined up in a row in the head of the reader. Each sensor measures the intensity of the light immediately in front of it.

[[File:Ccd.jpg|250px|]]

File:Ccd.jpg

2014-12-04T20:03:50Z

Juampa:

File:Laser.jpg

2014-12-04T19:59:34Z

Juampa:

File:Pen.jpg

2014-12-04T19:51:24Z

Juampa:

File:Manual-barcode-reader-laser-4980-5796485.jpg

2014-12-04T19:37:00Z

Juampa:

Hard disk

2014-11-05T19:43:21Z

Juampa:

=Hard Disk=
Hard Disk is an '''storage device''' which conserve permanently the data and is not clean when the computer is turn off, is a device that store a large volume of information.

[[File:HardDisk.jpg|500px]]

=Hard Disk Components=
Hard disk components
A typical hard disk has two electric motors; a spindle motor that spins the disks and an actuator (motor) that positions the read/write head assembly across the spinning disks.
#The platters are the actual disks inside the drive that store the magnetized data.
#The magnetic layer on the platters has tiny domains of magnetization that are oriented to store information that is transferred through the read/write heads.
#The spindle motor is built right into the spindle or mounted directly below it and spins the platters at a constant set rate ranging from 3,600 to 7,200 RPM. The motor is attached to a feedback loop to ensure that it spins at precisely the speed it is supposed to.
#The read/write heads read and write data to the platters.

[[File:ComponentsHD.jpg|400px]]

=Types Of Hard Disk=
*Hard disk drive: Hard disk drives have been the dominant type of storage since the early days of computers. A hard disk drive consists of a rigid disc made with non-magnetic material which is coated with a thin layer of magnetic material. Data is stored by magnetizing this thin film. The disk spins at high speed and a magnetic head mounted on a moving arm is used to read and write data. A typical hard disk drive operates at a speed of 7,200 rpm (rotations per minute), so you will often see this number as part of the technical specifications of a computer.

[[File:Hdd.jpg|500px]]

*Solid-state drives: (SDD) are a relatively new alternative to more traditional hard disk drives. Solid-state drives do not have moving parts, and data is stored electrically instead of magnetically. Most solid-state drives use flash memory, which is also used in memory cards for digital cameras and USB flash drives.

[[File:Sdd.jpg|500px]]

File:Sdd.jpg

2014-11-05T19:34:41Z

Juampa:

File:Hdd.jpg

2014-11-05T19:29:57Z

Juampa:

Hard disk

2014-11-04T12:21:01Z

Juampa:

Hard Disk is an '''storage device''' which conserve permanently the data and is not clean when the computer is turn off, is a device that store a large volume of information.

[[File:HardDisk.jpg|500px]]

Hard disk components
A typical hard disk has two electric motors; a spindle motor that spins the disks and an actuator (motor) that positions the read/write head assembly across the spinning disks.

[[File:ComponentsHD.jpg]]

Hard disk

2014-11-04T12:18:42Z

Juampa:

Hard Disk is an '''storage device''' which conserve permanently the data and is not clean when the computer is turn off, is a device that store a large volume of information.
[[File:HardDisk.jpg|500px]]
[['''Hard Disk components''']]
A typical hard disk has two electric motors; a spindle motor that spins the disks and an actuator (motor) that positions the read/write head assembly across the spinning disks.
[[File:ComponentsHD.jpg]]

Hard disk

2014-10-28T20:24:43Z

Juampa:

[[Hard Disk]] is an '''storage device''' which conserve permanently the data and is not clean when the computer is turn off, is a device that store a large volume of information.
[[File:HardDisk.jpg]]

[['''Hard Disk components''']]
A typical hard disk has two electric motors; a spindle motor that spins the disks and an actuator (motor) that positions the read/write head assembly across the spinning disks.
[[File:ComponentsHD.jpg]]

File:ComponentsHD.jpg

2014-10-28T20:22:34Z

Juampa: The Main Components Of Hard Disk

The Main Components Of Hard Disk

Hard disk

2014-10-28T20:20:20Z

Juampa:

[[Hard Disk]] is an '''storage device''' which conserve permanently the data and is not clean when the computer is turn off, is a device that store a large volume of information.
[[File:HardDisk.jpg]]
[['''Hard Disk components''']]
A typical hard disk has two electric motors; a spindle motor that spins the disks and an actuator (motor) that positions the read/write head assembly across the spinning disks.

File:HardDisk.jpg

2014-10-28T20:04:42Z

Juampa: Hard Disk Image

Hard Disk Image

Hard disk

2014-10-27T20:17:08Z

Juampa: Created page with "Hard Disk is an '''storage device''' which conserve permanently the data and is not clean when the computer is turn off, is a device that store a large volume of information."

[[Hard Disk]] is an '''storage device''' which conserve permanently the data and is not clean when the computer is turn off, is a device that store a large volume of information.