Cambridge Olevel Computer Science revision notes

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Lesson

Lesson-1.1.3- Convert between (i) positive denary and positive binary (ii) positive denary and positive hexadecimal (iii) positive hexadecimal and positive binary.

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Lesson-1.1.2- Understand how and why computers use binary to represent all forms of data. Denary is a base 10 system ??? Binary is a base 2 system ??? Hexadecimal is a base 16 system.Previous Lesson-1.1.4- Understand how and why hexadecimal is used as a beneficial method of data representation.Next