Hardware
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- Written by: Djami
- Category: Printers
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The printer is a device for making a printed output of the computer data on paper.
Several technologies exist we quote among others:
The dot matrix printer
The inkjet printer
The laser printer
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- Written by: Djami
- Category: Monitors
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A monitor or computer monitor is a video output device of a computer. It displays as pixels, the images generated by the graphics card of the computer.
Two types of screens:
1 - Analog screens: These are older screens called Cathode Ray Tube Screens (abbreviated to CRT for Cathod Ray Tube), which is used on most desktops. These are bulky, heavy monitors with high power consumption.
2 - Digital screens: are flat screens equipping all laptops, and a growing number of desktop computers. They have the advantage of being small in depth (hence their name), light and with low power consumption.
We distinguish :
Liquid crystal displays are light and simpler to industrialize but have certain limitations, especially in color rendering.
DLP (Digital Light Processing) displays use millions of micro-mirrors.
Plasma screens, offer a faithful rendering, but are expensive and have a limited life: technology gradually abandoned.
Touch screens, on some systems, the screen can also be used as input device: the user can choose an action by touching the corresponding part of the screen.
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- Written by: Djami
- Category: Power Supply Unit
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The power supply unit or PSU, is the computer equipment necessary to supply a PC with electric current. The power supply is responsible for converting the mains voltage into different DC voltages (Very Low Voltage), compatible with the electronic circuits of the computer.
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- Written by: Errazi
- Category: Hard disks
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The hard disk is the computer's body, which store data permanently, unlike the RAM, which is erased each time you restart the computer, this is why it is sometimes called memory mass to designate hard drives. The hard disk is connected to the motherboard via a hard disk controller that interfaces the processor and the hard disk. The hard disk controller manages the disks attached to it, interprets the commands sent by the processor and routes them to the disk concerned. The following interfaces are generally distinguished:
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