Memory Units of Computer-Bit, Byte, Nibble, Word
Memory units of computer comes in different sizes, depending on how much data the computer needs to store. There are two types of computer memory: primary memory and secondary memory
A microprocessor uses binary to represent the on and off states of various circuits. A bit is the smallest unit of this language. When you have a bit of binary code, you have a 1 or 0. One of the ways that a microprocessor is able to perform tasks is by combining bits together. By having lots of bits, it can perform many different tasks.
A Group of four (4) bits is equal to one nibble
A byte is a unit of data storage capacity. One byte is equal to 8 bits. The term was coined in 1959 by John Backus at IBM. He defined a byte as eight bits (1 bit 0 or 1). This means that each byte has two binary digits (bits) and can store 256 values (2^8 256).
A computer word is a grouping of bits, similar to a byte. However, each computer has a different word size or length. This varies from machine to machine. Because of this, each computer stores information differently. Nevertheless, they all follow the same general format of having a computer word.
|1||Kilobyte (KB) 1 KB = 1024 Bytes|
|2||Megabyte (MB) 1 MB = 1024 KB|
|3||Giga Byte (GB) 1 GB = 1024 MB|
|4||Tera Byte (TB) 1 TB = 1024 GB|
|5||Peta Byte (PB) 1 PB = 1024 TB|