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big-endian -a strategy for storing or transmitting the most significant byte first.

BIOS (Basic Input Output System) -a set of basic system calls for accessing hardware, or software services in a computer. This is typically a level lower than the operating system.

binary -a base 2 numbering system with the digits 0 and 1.

bit -a single binary digit. Typically the symbols 0 and 1 are used to represent the bit value.

bit/nibble/byte/word -binary numbers use a 2 value number system (as opposed to the decimal 0-9, binary uses 0-1). A bit refers to a single binary digit, and as we add digits we get larger numbers. A bit is 1 digit, a nibble is 4 digits, a byte is 8 digits, and a word is 16 digits.

plc glossary -35.4
decimal(base 10) binary(base 2) octal(base 8)
0 0 0
1 1 1
2 10 2
3 11 3
4 100 4
5 101 5
6 110 6
7 111 7
8 1000 10
9 1001 11
10 1010 12
11 1011 13
. . .
. . .
. . .
e.g. differences
decimal 15 ... tens
3,052 ... thousands
1,000,365 ... millions
binary 1 ... bit
0110 .... nibble (up to 16 values)
10011101 ... byte (up to 256 values)

least significant bit

BITNET (Because It’s Time NET) -An academic network that has been merged with CSNET.

blackboard -a computer architecture when different computers share a common memory area (each has its own private area) for sharing/passing information.

block -a group of bytes or words.

block diagrams -a special diagram for illustrating a control system design.

binary -specifies a number system that has 2 digits, or two states.

binary number -a collection of binary values that allows numbers to be constructed.

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