Technology Words

Hi everbody!
Here is some new technology words I learned from Google and Bing.

Backup - A copy on floppy disk or tape of files on a PC's hard disk. A backup is used in case the hard disk file(s) are erased or damaged. 

Anti-virus software - A program that finds and removes viruses from a computer.

CPU - Central Processing Unit. This is a PC's heart or 'brains'.

Hard disk - The main disk inside a computer used for storing programs and information. It is hard because it is metal. See floppy disk.
MHz - Megahertz. This describes the speed of computer equipment. The higher the MHz the better the performance.
Peripheral - Any equipment that is connected externally to a computer. For example, printers, scanners and modems are peripherals.
PC card - A device that is the same size as a thick credit card, for plugging into a slot on notebook computers. You can buy memory, modems and hard disks as PC cards.

RAM, ROM -Transistor Two types of memory. RAM (Random Access Memory) is the main memory used while the PC is working. RAM is temporary. ROM (Read Only Memory) is for information needed by the PC and cannot be changed.

TFT - Thin Film , a type 
high quality screen for notebook computers.

	Circuit: An electronic component consisting of a complete path; a voltage source and a load.

A-Cable is a term used to describe a standard SCSI Cable.
Conductor: Material that transmits electrical currents, heat, and/ or sound.