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ZIMSEC O-Level Computer Science

8.25Form 3: Units of storage; octal and hexadecimal

Form 3: Units of storage; octal and hexadecimal in ZIMSEC O-Level Computer Science: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic52 practice questions3 lessons

Learning objectives

What the syllabus expects you to be able to do.

  1. 8.25.1Outline the units of storage from the bit and nibble to the terabyte.
  2. 8.25.2Convert denary numbers to octal and hexadecimal and back.

Lessons

  • Hexadecimal: conversions and uses

    35 min

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  • Octal: the base 8 number system

    30 min

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  • Units of data storage

    25 min

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Sample question

A sample question on this topic. Answer it, check it, then read the worked answer.

Form 3: Units of storage; octal and hexadecimal: sample question

1 mark

Convert the denary number 93 to hexadecimal.

Turn Form 3: Units of storage; octal and hexadecimal into a strength.

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