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JSS2: COMPUTER STUDIES - 1ST TERM

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  1. Computer Software | Week 1
    4 Topics
    |
    1 Quiz
  2. Operating System | Week 2
    9 Topics
    |
    1 Quiz
  3. Computer Memory: Primary And Secondary Memory | Week 3
    5 Topics
    |
    1 Quiz
  4. Computer Memory II: Secondary Memory (Backing Storage) | Week 4
    2 Topics
    |
    1 Quiz
  5. Number System I | Week 5
    4 Topics
    |
    1 Quiz
  6. Number System II | Week 6
    3 Topics
    |
    1 Quiz
  7. Units of Storage In Computer | Week 7
    2 Topics
    |
    1 Quiz
  8. Problem Solving Skills With Computer | Week 8
    5 Topics
    |
    1 Quiz
  9. Computer Programming Languages | Week 9
    3 Topics
    |
    1 Quiz



Lesson Progress
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Topic Content:

  • Conversion From Decimal To Binary
  • 7 Worked Examples
  • Evaluation Questions

Conversion From Decimal To Binary:

Note that the binary number 1010 may be specified as base two by writing it as 10102, i.e. base two (2). The decimal number 100 may be written as 10010, i.e. base ten (10). Don’t forget that binary numbers are the mother tongue of computers.

Rules to follow:

i. Divide the decimal number by 2
ii. Continue the division until zero is reached
iii. Read the remainder to get the answer starting from the bottom upward.

Worked Example 1:

Convert 18 in decimal to binary (base 2)

Solution

number system binary

Answer: 1810 = 100102

 

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