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Tech
Funda
A single binary digit (like '0' or ‘1’) is called a ‘bit’. For example, 11010 is five bits
long. The word bit is made up from the words 'binary digit’.
A computer is a machine made up of transistors, switches and other components. All these
electronic components are in two mutually exclusive states, either ON or OFF. The two binary
digits represent these two states. Every instruction given to a computer is converted into 0’s and
1’s so that it can be understood and implemented by the computer. Binary language is therefore
known as the machine language.
A binary number is made up of only 0s and 1s.
Example of Binary Number: 110100
There is no 2, 3, 4, 5, 6, 7, 8 or 9 in Binary!
Name Size (bits) Examples
Bit 1 Single digit either 0 or 1
Nibble 4 Group of 4 digits either 0 or 1
Byte 8 Group of 8 digits either 0 or 1
Word 16 Group of 16 digits either 0 or 1
Tech
Funda
If the last digit of a binary number is 1, the number is odd; if it is 0, the number
is even. For Example:
1101 represents an odd number (13)
10010 represents an even number (18)
Let us first learn how to form binary numbers.
As the binary number system consists of two digits 0 and 1 hence, its base is 2. Each digit or
bit in binary number system can be 0 or 1. A combination of binary digits may be used to
represent different quantities like 1001. The positional value of each digit in binary number
is twice the place value or face value of the digit of its right side. The weight of each position
is a power of 2.
Number System 9

