- Each character on keyboard is allocated a numeric equivalent
- Numeric value is called ASCII code
ASCII
- ASCII stands for American Standard Code for Information Interchange
- ASCII code allows computers to understand how to represent text.
- In ASCII, each character (letter, number, symbol or control character) is represented by a binary value.
Extended ASCII – 8 Bits
- Extended ASCII is a version that supports representation of 256 different characters.
- Each character is represented by 8 bits
This ASCII code number is then converted to binary
Extended ASCII
The number of bits required to store the text
I Love Computing Science
There are 24 characters including spaces
24*8 = 192 bits
Example
HELLO
ASCII code 72 69 76 76 79
Binary
01001000 01000101 01001100 01001100 01001111