Data Representation

Data Representation

1. Gates

   • AND Gate
     • If both inputs are true, the output is true.
   • OR Gate
     • If either of the inputs are true, then the output is true
   • NOT Gate
     • If none of the inputs are true, the output is true

2. Character sets

   • ASCII
     • American Standard Code For Information Interchange
     • 7 Bit
   • Unicode
     • 16 bit
     • Many characters in different languages and symbols

3. Numerical

   • Binary
     • Base 2
     • 1s and 0s
   • Denary
     • Base 10
     • 1s, 2s, 3s, 4s, 5s, 6s, 7s, 8s, 9s, 0s
   • Hexadecimal
     • Base 16
     • 0-9s, a-fs

4. Data units

   • Data types
     • String
     • Real
     • Boolean
     • Integer
   • Storage units
     • Bit
     • Nybble
     • Byte
     • Kilobyte
     • Megabyte
     • Gigabyte
     • Terrabyte
     • Petabyte
     • Exabyte
     • Zettabyte
     • Yottabyte