Basic Data Types

Bit: 0, 1

Bit String: sequence of bits of a particular length

4 bits is a nibble

8 bits is a byte

16 bits is a half-word

32 bits is a word

64 bits is a double-word

Character:

ASCII 7 bit code

Decimal: (BCD code)

digits 0-9 encoded as 0000 thru 1001

two decimal digits packed per 8 bit byte

Integers:

2's Complement (32-bit representation).

Floating Point:

Single Precision (32-bit representation).

Double Precision (64-bit representation).

Extended Precision(128 -bit representation).

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