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What is Basic Data Structure in Computers?

Important banking qna for banking aspirants, which is helpful in banking exam.

Mar 25, 2015 15:43 IST
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The computer data is made up of certain components basically called ‘bits’ and ‘bytes’.

Bit: A bit (sometimes abbreviated as b) is the most basic information unit used in computing and information theory. A single bit is a one or a zero, a true or a false, a ‘flag’ which is ‘on’ or ‘off’ or in general, the quantity of information required to distinguish two mutually exclusive states from each other.

Byte: A byte is a collection of bits variable in size but now almost always eight bits. Eight -bit bytes, also known as octets, can represent 256 values (28 values, 0-255).

Kilobyte: It is a unit of information or computer storage equal to 1024 bytes. It is commonly abbreviated as KB, kB, Kbyte or kbyte.

The term ‘kilobyte’ was first used for a value of 1024 bytes (210), because 210 is roughly one thousand and powers of two are convenient for use with binary digital computers.

Megabyte: A megabyte is a unit of information or computer storage equal to approximately one million bytes. It is commonly abbreviated as MB.

One Megabyte (MB) = 220 bytes= 1024 kilobytes

Gigabyte: A gigabyte is a unit of information or computer storage equal to approximately one billion bytes. It is commonly abbreviated as GB in writing and gig in writing or speech.

One Gigabyte (GB) = 230 bytes = 1024 megabytes

Terabyte: A terabyte is a unit of information or computer storage equal to approximately one trillion bytes. It is commonly abbreviated as TB.

One Terabyte (TB) = 240 bytes= 1024 gigabytes

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