Reference Manual for the CLOUD 370x F Contactless Desktop Readers
Document Version 1.0
Last revised on 2014-07-22
Page 11 of 82
2.6:
Conventions for Bits and Bytes
Bits are represented by a lower case ‘b’ followed by an ordering digit which indicates its position.
Bytes are represented by an upper case ‘B’ followed by one or more ordering digits which indicate its
position.
b7
b6
b5
b4
b3
b2
b1
b0
B4
B5
B6
B7
B8
B9
B10
B11
B0
B1
B2
B3
Least significant nibble
Most significant nibble
1 Byte = 8 bits = 2 nibbles
Bit number 0
Bit number 5
String of 12 bytes
Byte number 11
Byte number 2
Examples:
Decimal number 163 is represented in
•
hexadecimal as 0xA3
•
binary as (10100011)b
The least significant nibble of 0xA3 is
•
0x3 in hexadecimal
•
(0011)b in binary
The most significant nibble of 0xA3 is
•
0xA in hexadecimal
•
(1010)b in binary
