Digital Electronics/Mathematic and Logic Operations/Digital Encoder
Digital Encoder
[edit | edit source]Digital Encoder is a Digital Device that use binary number of certain bits to reprepresent information .
Examples
[edit | edit source]Example 1
[edit | edit source]Using two bit binary number we have 4 2 bits binary numbers
- 00
- 01
- 10
- 11
Let
- 00 --- 0
- 01 --- 1
- 10 --- 2
- 11 --- 3
Then decimal number from 0 to 3 can be coded as 2 bit binary number .
Example 2
[edit | edit source]Similarly, with 4 bit binary number can be used to code decimal numbers from 0 to 15 as shown below
- 0000 --- 0
- 0001 --- 1
- 0010 --- 2
- 0011 --- 3
- 0100 --- 4
- 0101 --- 5
- 0110 --- 6
- 0111 --- 7
- 1000 --- 8
- 1001 --- 9
- 1010 --- 10
- 1011 --- 11
- 1100 --- 12
- 1101 --- 13
- 1110 --- 14
- 1111 --- 15
Binary Coding
[edit | edit source]4 bit binary coded decimal
[edit | edit source]4 bit binary coded decimal (BCD) is a digital device that use 4 bit binary numbers to represent decimal number from 0 to 15
Construction
[edit | edit source]7 bit binary coded decimal
[edit | edit source]7 bit binary coded decimal (ASCII) is a digital device that use 7 bit binary numbers to represent decimal number from 0 to 9 alphabets a to z, A to Z