In a digital computer the data is represented as a collecton of bits. Different stoarge measuring units are as follows: Bit: The binary digit 0 or 1 is called a bit. It is the smallest unit for storing data in the computer memory. Actully, the main memory consists of large number of electronic switches. Each switch can have either of the two states ON or OFF. The ON state represents 1 and OFF state represents 0.
Byte: A group of 8 bits is called byte. One characters takes one byte of memory. The stoarge capacity of the memory is expressed in term of number of bytes.The data and progra size are also measured in bytes
Nibble: A group of 4 bits is called a nibble. One byte is equal to 2 nibbles. Following is the list of different memory measuring units.
1Nibble = 4bits
1Byte = 8bits
1KB = 1024 bytes
1MB = 1024KB
1GB = 1024MB
1Terabyte = 1025GB