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2.4.1 BIN (Binary Code)
(1) Definition
Binary is a numeral system that represents numeric values using two symbols, 0 (off) and 1 (on)
Decimal notation uses the symbols 0 through 9. When the symbols for the first digit are exhausted (a
digit reaches 9), the next-higher digit (to the left) is incremented, and counting starts over at 0.
In binary notation, only the symbols 0 and 1 are used. After a digit reaches 1, an increment resets it to
0 and the next digit (to the left) is incremented. (The numeric value becomes 10, which is equal to 2 in
decimal.)
Table2.3 shows the numeric representations in BIN and DEC.
Table2.3 Numeric representations in BIN and DEC
DEC (Decimal)
0
1
2
3
4
5
6
7
8
9
10
11
CHAPTER2 SEQUENCE PROGRAMS
BIN (Binary)
0000
0001
Carry
0010
0011
Carry
0100
0101
0110
0111
Carry
1000
1001
1010
1011
1
2
.
3
4
5
6
7
8
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