Terms and Definitions for May the 5th.

1.- Hexadecimal - A base 16 number system.

2. - Word - An ordered set of characters that is treated as a unit.

3.- Octal - A base 8 number system.

4.- Pure Binary - uncoded binary.

4.- Binary-Coded Decimal (BCD) - A code in which each decimal digit is represented by a group of 4 binary bits.

5.- Excess-3 Code - A code in which the decimal digit n is represented by the 4-bit binary code n+3.

6.- Gray Code - A non weighted binary code in which sequential numbers are represented by codes that differ by one bit.

7.- Alphanumeric Code - A code used to represent the letters of the alphabet and decimal numbers. The computer keyboard.



Thanks to Introductory Computer Mathematics, Second Edition, Nigel P Cook, Prentice Hall, pages 210-222.