Popular number System

Base

Example

Minimum 

Maximum

Decimal

10

2410

0

255

Binary

2

000110002

00000000

11111111

Octal

8

308

0008

3778

Hexadecimal

16

1816

00

FF
  • ASCII code – American Standard for Information Interchange
  • Alphanumeric code = Alphabets + Numbers + symbols & commands for information conveying. 
  • Present version of ASCII -> 8 bit code
  • 128 different character -> upper& lowercase alphabets, numbers, punctuation, symbol, control char
  • A -65  a-97