Express Learning - Introduction to Information Technology by Pearson

3

Computer Memory and Storage

1. List various units that help in measuring the computer memory.

Ans.:   All the quantities, physical or otherwise, are measured in some units. For example, length is measured in metres and mass in grams. Likewise, for measuring the computer memory, a standard unit is required. Various units that are used to measure the computer memory are as follows:

• Bit: It is the smallest unit of data on a machine and a single bit can hold only one of two values: 0 or 1. It is represented as b.
• Byte: A unit of 8 bits is known as a byte. Hence, it is able to contain any binary number between 00000000 and 11111111. It is represented as B.
• Kilobyte: In a decimal system, kilo stands for 1000, but in a binary system, kilo refers ...