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Decimal Numbers
powers of 2
15 in bin, hex, dec
Bit
is one single binary value. So, it is a single-digit binary number that is
either 0 or 1.
Nibble
A nibble is a group of 4 bits. A nibble is also a single hexadecimal digit.
That is one of the reasons why it is so easy to represent a binary number in hexadecimal: Every group of 4 bits is a hexadecimal digit.
Byte
A byte is a group of 8 bits. A byte is also 2 nibbles. In many ways, a byte is the basic unit of measure in the computer industry. Most western characters are represented by a byte.
10011110101 binary into hex
Convert 100111101012 to hexadecimal: 1. Separate the binary number into nibbles starting from the right. Pad with leading 0s if necessary: 0100 1111 01012. 2. Convert each nibble to its corresponding hexadecimal number: • 01002 = 416 • 11112 = F16 • 01012 = 516 3. Concatenate the hexadecimal digits in the order of the original binary number: • Original number is 0100 1111 01012 • Concatenated hex number is 4F516 Answer: 100111101012 = 4F516
1
0001 1
2
0010 2
3
0011 3
4
0100 4
5
0101 5
6
0110
7
0111
8
1000
9
1001
10
1010 A
11
1011 B
12
1100 C
13
1101 D
14
1110 E
15
1111 F
x of y cards