Binary Basics
What digits are used in binary numbers?
0 and 1
Convert 2 to binary
10
Convert 1 to decimal
1
Is 102 a valid binary number?
No – binary only uses 0 and 1
Add: Binary 1 + 1
10
What number system do computers use?
Binary System
Convert 99 to binary
01100011
Convert 100 to decimal
4
What is the binary of 0?
0
Add: Binary 10 + 10
100
How many values can a single bit represent?
2 values
Convert 246 to binary
11110110
Convert 1101 to decimal
Which is larger: binary 1111 or decimal 14?
Binary 1111 = 15, so 1111 is larger
Subtract: Binary 1010 – 1
1001
How many bits are in a byte?
8
Convert 63 to binary
00111111
Convert 10101 to decimal
21
True or False: Binary 1000 is the same as decimal 1000
False
Multiply: Decimal 3 × 2 → Convert result to binary
110
How many total combinations can 4 bits make?
16 combinations = 2⁴
Convert 178 to binary
10110010
Convert 111111 to decimal
63
How many bits are in binary number 10101010?
8 bits
Convert decimal 31 to binary and binary 10011 to decimal
11111 and 19