2. What is Binary?
What computers use to process Data
Made up of 0’s and 1’s
BASE 2
This means that there are only two possible values
(0/1).
1 binary digit = 1 bit (the smallest unit of
information when dealing with computing)
8 bits = 1 Byte
0 = OFF
1 = ON
Anytime we use numbers in computing, such
as IP Addresses, we are converting them from
Binary so they are easy to understand.
3. What is Decimal?
What we use everyday as humans
Easy to read
15, 88, 102…
Base 10
Means: 10 possible values 0 1 2 3 4 5 6 7 8 9
Used to read IP Addresses: 192.166.15.7
4. Binary Values
IP Addresses are 4 Bytes of information
Each Byte has 8 bits
Each bit has a special value depending on
where it is in the order.
Bit Values
128 64 32 16 8 4 2 1
1st bit 2nd bit 3rd bit 4th bit 5th bit 6th bit 7th bit 8th bit
27 26 25 24 23 22 21 20
5. Converting Decimal to
Binary
Decimal # 195
Bit Value 128 64 32 16 8 4 2 1
Value of 2 27 26 25 24 23 22 21 20
Binary
Equivalent
ON/OFF
1 1 0 0 0011
Add up all the bits that are ON in order to check your answer:
128 + 64 + 2 + 1 = 195
6. Converting Binary to
Decimal
WHAT IS THE DECIMAL VALUE?
Add up all the bits that are ON in order to find the answer:
Decimal # 109
Bit Value 128 64 32 16 8 4 2 1
Value of 2 27 26 25 24 23 22 21 20
Binary
Equivalent
ON/OFF
0 1 1 0 1101
7. Classwork
Play the Binary Conversion Game
Try conversions on your own!!!
Complete the Conversions
Worksheet.
