ZIMSEC O-Level Computer Science
8.14Form 2: Conversion between binary and denary; ASCII; binary addition and subtraction
Form 2: Conversion between binary and denary; ASCII; binary addition and subtraction in ZIMSEC O-Level Computer Science: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic77 practice questions4 lessons
Learning objectives
What the syllabus expects you to be able to do.
- 8.14.1Convert numbers between binary and denary.
- 8.14.2Convert keyboard characters to binary using ASCII codes.
- 8.14.3Add binary numbers.
- 8.14.4Subtract binary numbers.
Lessons
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Binary addition and overflow
30 min
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Binary subtraction with borrowing
30 min
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Converting between binary and denary
30 min
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Representing text: ASCII and Unicode
30 min
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Sample question
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