Cameroon GCE A/L June 2014 ICT 2

Cameroon GCE A/L June 2014 ICT 2

Cameroon GCE A/L June 2014 ICT 2

A machine cycle consists of a series of operations performed to run a single program instruction
– fetch, decode and execute the instruction, and return the result to the RAMif necessary.
(a) What is the meaning of RAM? Give the main function of the RAM. (3 marks)
(b) Explain the process of fetch, decode and execute in the machine cycle. (3 marks)
Describe the following:
(a) Word size
(b) Byte
(c) ASCII code

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