adc-44d ETC-unknow, adc-44d Datasheet - Page 53

• Manufacturer Part Number: adc-44d
• Description: Multi-function Analogue Input/output Card
• Manufacturer: ETC-unknow

Appendix A
The following diagram illustrates this.
To determine the decimal value of a binary pattern, add up the decimal number
of each column containing a binary “1”.
The above example shows the binary pattern that is equivalent to 198
The binary string defining a Byte can be unwieldy. To make it less error prone,
the 8 bits forming a byte are divided into two groups of 4 bits, known as
NIBBLES. With four bits there are 16 possible numeric combinations
(including zero). A convenient method of representing each nibble is to use the
hexadecimal base 16 system.
When converting binary to hex, the byte is divided into nibbles each represented
by a single hex digit. This technique is applied to the selection of the base
address for the circuit board. The following diagram illustrates the construction
of a hex number.
Hexadecimal upper nibble = (1 x 8) + (1 x 4) + (0 x 2) + (0 x 1) = 12
The resulting value is C6
Blue Chip Technology Ltd.
BIT No
NIBBLE VALUE
BINARY NUMBER
HEXADECIMAL:
BIT No
DECIMAL VALUE
BIT No
DECIMAL VALUE
BINARY NUMBER
lower nibble = (0 x 8) + (1 x 4) + (1 x 2) + (0 x 1) = 6
ÀÄÄÄÄÂÄÄÄÄÄÙ
7
8
1
128
128
Hex
7
7
1
, since 12
6
4
1
Numbering Systems
64
64
C
6
6
1
5
2
0
32
32
Decimal
5
5
0
4
1
0
16
16
equals C
4
4
0
ÀÄÄÄÄÄÂÄÄÄÄÄÙ
3
8
0
3
8
3
8
0
Hex
2
4
1
.
2
4
2
4
1
6
1
2
1
1
2
1
2
1
0
1
0
Decimal
0
1
0
1
0
Page 45
127-170
.