0000 0 0
0001 1 1
0010 2 2
0011 3 3
0100 4 4
0101 5 5
0110 6 6
0111 7 7
1000 8 -8
1001 9 -7
1010 10 -6
1011 11 -5
1100 12 -4
1101 13 -3
1110 14 -2
1111 15 -1
- Unsigned Integers
Unsigned integers are unsigned binary numbers contained in a byte, word, doubleword, and quadword.
unsigned byte integer: range from 0 to 255;
unsigned word integer: from 0 to 65,535;
unsigned doubleword integer: from 0 to 2^32– 1 (4,294,967,296-1);
unsigned quadword integer: from 0 to 2^64– 1 (约42亿*42亿);
- Signed Integers
Signed integers are signed binary numbers held in a byte, word, doubleword, or quadword.
Integer values range
from –128 to +127 for a byte integer,
from –32,768 to +32,767 for a word integer,
from –2^31 to +2^31 – 1 for a doubleword integer.
from –2^63 to +2^63 – 1 for a quadword integer.
