BITS, BYTES AND WORDS

BITS, BYTES AND WORDS

BITS: 

The bit is the smallest value which can be stored in a computer. The bit is also called a binary digit. The bit can hold binary value either 0 or 1.

Nibble: 

The nibble is a collection Of four bits.

Byte: 

The byte is a collection Of eight bits.
The byte is the standard unit Of measurement Of computer memory data storage and transmission speed.

A DVD-ROM has a capacity of 4.7 gigabytes, and internet speeds Of 4 megabits per sec(MBPS) is common.

Length	Name	Example
1	bit	0
4	nibble	1011
8	bytes	00101100

The relationships between these units are expressed in the following manner:

Words: 

Even though computer memory is measured in bytes (rather mega- or gigabytes), the CPU handles memory data in larger units, called words, where a word is usually an even multiple Of bytes (two bytes, four bytes etc.). This number purely based on processor architecture.

Most machine instructions are one word in size, and because a CPU register must be able to hold an instruction, it too is one word wide.

Video tutorial: