| A | B |
|---|
| CPU | a chip or chips on the mainboard containing the control unit and the arithmetic/logic unit, which interpret and carry out the basic instructions that operate a computer. |
| Hardware | The physical components of the computer system, e.g. keyboard, mouse, speakers etc. |
| LCD | super-thin displays that are used in laptop computer screens and flat panel monitors. The image is created by sandwiching an electrically reactive substance between two electrodes. The color of this substance can be changed by increasing or reducing the electrical current. Since LCD screens are based on the principle of blocking light (rather than emitting it), they use up much less power. |
| Modem | A communications device that converts a computer’s digital signals to analog signals so they can be transmitted over standard telephone lines. |
| Port | The interface or point of attachment an external device has to the system unit. |
| Power Supply | Converts wall outlet AC power into DC power, which is the type of power required by a computer. |
| Sofware | Programs – a series of instructions that tells the hardware what to do. Also the interface between the user and the computer system. |
| Specifications | A description of the criteria for the construction, appearance or performance of a computer system. |
| Consumables | Items that need to be replaced such as toners, ink cartridges, paper, blank disks etc. |
| Disk Drives | The device that operates (reads & writes) to the floppy, HDD, DVD and CD ROM. |
 | Video Card |
 | Sound Card |
 | Motherboard |
