a. Using an appropriate illustrative diagram, outline internal organization of the CPU showing components
(CU, ALU, Internal Bus and Registers. (4 Marks)
b. Discuss the functions of CU, ALU and registers PC, IR. (4 Marks)
c. Analyze how the diverse I/O devices are interfaced to computer CPU and buses for the following methods:
(8 Marks)
i. Programmed I/O
2
ii. Interrupt-driven I/O
iii. DMA
iv. I/O Processor
d. Outline the instruction fetch cycle. (4 Marks)
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