What is a bit a nibble a byte and a word?

A " bit " is a single one or zero. It has two states, and can only represent one of two values.

A " byte " is (usually) 8 bits working together, such that each bit is double the value of the bit to its right. A byte can represent 256 possible values.

A "kilobyte" is 1024 Bytes

A "Word" is a unit of data of a defined bit length that can be addressed and moved between storage and the computer processor. Usually, the defined bit length of a Word is equivalent to the width of the computer's data bus so that a Word can be moved in a single operation from storage to a processor register. For any computer architecture with an eight- bit byte , the Word will be some multiple of eight bits.