It is a code that uses numbers to represent characters. Each letter is assigned a number between 0 and 127. A upper and lower case character are assigned different numbers. For example the character A is assigned the decimal number 65, while a is assigned decimal 97 as shown below int the ASCII table.

How do you use Ascii codes?

To insert an ASCII character, press and hold down ALT while typing the character code. For example, to insert the degree (º) symbol, press and hold down ALT while typing 0176 on the numeric keypad. You must use the numeric keypad to type the numbers, and not the keyboard.

What is ASCII How does it work?

ASCII uses 8 bits to represent a character. However, one of the bits is a parity bit. This is used to perform a parity check (a form of error checking). This uses up one bit, so ASCII represents 128 characters (the equivalent of 7 bits) with 8 bits rather than 256.