O-LevelComputer ScienceAutomated and emerging technologies2210/12 · Oct/Nov 2023 · Q45 Marks

A washing machine is an example of an embedded system.

(a)Give two characteristics of an embedded system. 1 2[2]
(b)Circle three other examples of an embedded system. freezer laptop personal computer (PC) security light system smartphone vending machine web server[3]

Mark scheme

Marking points from the official mark scheme (Oct/Nov 2023). The mark or mark type is shown in brackets.

[2] Any two from: // Performs a single/limited/dedicated function/task // It has a microprocessor // It has dedicated hardware // Uses firmware // It is normally built into a larger device/system // User normally cannot reprogram // It does not require much power // It is cheap to manufacture // Works automatically // works without human intervention // It is small (in size) // It is a real-time system
[3] One mark for each correct system: // security light system // freezer // vending machine

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Topic: Automated and emerging technologies, O-Level Computer Science (syllabus 2210). Structured question, 5 marks.
Source: O-Level Computer Science, Oct/Nov 2023 Paper 1 Variant 2, question 4.

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