a. A peripheral device connects to the host via I/O module. Provide reasons why peripheral device requires
I/O module. (4 Marks)
b. Explain three factors affecting performance of CPU. (3 Marks)
c. CPU speeds have improved over time; explain three speed enhancement techniques that have been
employed. (6 Marks)
d. Describe the distinguishing characteristics of the following memory types and further, explain with
justification their possible areas of application (within a typical computer system). Memory types: PROM,
EPROM, FlashROM, DRAM, SRAM. (5 Marks)
e. Distinguish between SRAM and DRAM. (2 Marks)

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