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In computing, bandwidth refers to the capacity of a communications line/channel to transmit/receive information. It can also refer to how much traffic a web hosting company will allow each month for data transfer, when in this context bandwidth is measured in bits, kilobytes, megabytes and gigabytes.

BOOT/Booting Up:

Booting up is a term derived from and older computer term "bootstrap" which means the computer circuitry is initializing from some hard-coded instructions located in a microchip called the BIOS. BIOS stands for Basic Input/Output System


BIOS stands for Basic Input/Output System. This ROM microchip located in the computer contains some hard coded instructions (non-modifiable by software or by user) that initiates the startup or boot procedures for the computer. Other parts of the BIOS are user and software modifiable. This part should only be modified by a person familiar with BIOS modifications. An improper entry here could stop your computer from working


Binary is a system used by digital devices like computers, CD players etc. It is a sequence of 1s and 0s which relate to on and off electrical pulses and can only have 2 states on and off unlike analogue systems which can have varying states. These 1s and 0s are commonly referred to as a BIT (binary digit)


This refers to a binary digit i.e. it would either be a 1 or a 0, 8 bits make a byte. It refers to information stored or processed in a digital system. For instance if you have a 64-bit processor then it can process 64 bits (8 bytes) of data every clock cycle.


A Byte is made up of 8 bits and is the measurement unit used to describe the storage capacity and transfer rate of digital systems

    A Kilobyte is 1024 bytes

    A Megabyte is 1024 Kilobytes

    A Gigabyte is 1024 Megabytes


This is the program you use to surf the Internet, such as Internet Explorer, Netscape Navigator, Opera etc. Different browsers render web pages slightly differently, for example some sites may require a certain browser to function correctly and some sites may not function at all with some browsers


A CD-ROM (Compact Disc-Read Only Memory) disc is an optical data disc and is made by sandwiching a thin metallic membrane between two layers of Lucite. The data is stored in tiny pits in the membrane. Focused laser light in a CD-ROM drive is reflected off of the pits in the disc and translated into digital data. This is the same technology used in music CDs


A CD-ROM (Compact Disc-Read Only Memory) drive is an optical drive that uses laser(s) to read a data CD-ROM or music CD. A typical data CD-ROM can store up to 700Mb, 486 times more information than a standard 1.44Mb 3.5" floppy disk


A CDR (Compact Disc-Recordable) is a recordable CD, ideal for backing up data, although normal CDRs can be used to create audio CDs, there are special audio CDRs which offer a higher quality of audio reproduction

CDRW (Compact Disc Re-Writable) is a recordable CD, which allows the data to be overwritten numerous times, which is handy for daily back-ups


A CD writer/burner can save data or audio to a special type of recordable CD (CDR or CDRW). This is an excellent way of backing up your data or creating audio CDs


CPU (Central Processing Unit) is the main processor in your system. The CPU is nothing more than a big calculator that carries out simple mathematical computations. But most importantly it processes and controls all data flowing into and out of the computer. The main computer box is sometimes erroneously called the CPU