- What is ASCII
- ASCII stands for American Standard Code for Information Exchange
- Developed in 1961 for representing text-based information
- Encodes 128 characters into 7-bit integers
- Character Structure
- Contains 95 printable characters (32-126)
- Uppercase letters (A-Z) range from 65 to 90
- Lowercase letters (a-z) range from 97 to 122
- Digits (0-9) range from 48 to 57
- Special characters include punctuation and special symbols
- Character Order
- Uppercase letters come before lowercase letters
- Digits and punctuation symbols precede letters
- Comparison with Other Standards
- Unicode is a superset of ASCII with wider character range
- Extended ASCII uses 8 bits for 256 characters
- ASCII was chosen for 7-bit encoding due to cost efficiency
- First ASCII standard published in 1963