This lesson includes: * Octal to Binary Conversion * Octal to Decimal Conversion * Decimal to Octal Conversion

1. COC 1: Install and Configure Computer System

2. • It consist of eight digits.
• 0, 1, 2, 3, 4, 5, 6, 7.
• With the base 8.
Number System
Octal

3. • Same method of Binary to Decimal
Conversion.
Number System Conversion
Octal to Decimal

4. Number System Conversion
1438 = (1x82) + (4x81) + (3x80)
= (1x64) + (4x8) + (3x1)
= 64 + 32 + 3
= 9910

5. 1. Use Double Dabble Method but use 8 as your
divisor.
2. Use can also use this method for your
checking in Octal to Decimal Conversion.
Number System Conversion
Decimal to Octal

6. Number System Conversion
8
8 1210
1
4
39910
Read the remainders
from bottom to top.
The result is:
9910 = 1438

7. Number System Conversion
Octal to Binary
1. In converting Octal to Binary, we will use a
chart for conversion.

8. Number System Conversion
4 2 1
0 0 0 0
1 0 0 1
2 0 1 0
3 0 1 1
4 1 0 0
5 1 0 1
6 1 1 0
7 1 1 1

9. Number System Conversion
How to use the chart?
• 1101111002 is the given binary code.
• Group the given binary code in to 3 (Three).
• Always start from Right to Left.
110|111|1002

10. Number System Conversion
How to use the chart?
• After you group the given binary code into 3.
• Check the value of each group in the chart
110|111|1002
6 7 4

11. Number System Conversion
How to use the chart?
1101111002 = 6748

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