(b). Designers are constantly undertaking research into possible improvements that can be made to various types of memory that computers use. Often times, the designers grapple with issues relating to the design of computer memories. Critically compare and contrast registers and magnetic disk storage in a computer system that you AN[4 marks] AP[4 marks]5 frequently use. You may draw a suitable diagram and/or a table of comparisons to illustrate your answer, if you desire. (c). Describe the circumstance(s) for which System Call(s) may be invoked (or made) in a computer system; and explain how the operating system responds to such invocation(s).
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