AS Level Computer Science H046/01 Computing principles Sample Question Paper

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Intensive Care Units in hospitals are for patients in need of round the clock monitoring and support. Computerised systems can be used to monitor patients’ vital signs (temperature, heart rate, ... blood pressure and breathing). They can then alert medical professionals to any significant changes. These systems usually run on an embedded, real-time, operating system. (a) (i) State what is meant by the term real-time. ………………………………………………………………………………………………...…….. ……………………………………………………………………………………………………..[1] (ii) Explain why a real-time operating system would be suitable for this purpose. …………………………………………………………………………………………………..…… ……………………………………………………………………………………………………..… ……………………………………………………………………………………………………..[2] (b) (i) Explain two advantages of this monitoring system having its operating system stored in ROM. ……………………………………………………………………………………………………… ……………………………………………………………………………………………………… ……………………………………………………………………………………………………..[2] (ii) The monitoring system also has RAM. Describe what happens to the contents of RAM and ROM when power to the monitoring system is removed... [Show More]

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