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Computer Science

GCSE · AQA

QuestionsFlashcards

Cyber Security Threats
Social Engineering
- What Social Engineering Is
  4
- Blagging, Phishing & Shouldering
  5
Malware
- What Malware Is
  2
- Viruses, Trojans & Spyware
  3
Detecting & Preventing Threats

Embedded Systems Flashcards

All 6 cards in this deck

What is an embedded system?: A small computer built into a larger device, which controls that device and usually performs only one or a limited number of tasks.
Give three typical characteristics of an embedded system.: It has a specific purpose (one or a limited number of tasks); it is built within a larger device; its software is in firmware/ROM and is hard to change.
Give three examples of embedded systems.: e.g. a dishwasher, a digital watch and a car engine management system. (Also central heating, GPS, fitness trackers, calculators.)
True or false? A laptop is an embedded system.: False. A laptop is a non-embedded (general purpose) computer: it can run many different programs chosen by the user.
Give two differences between an embedded system and a non-embedded system.: An embedded system performs only one or a limited number of tasks and is not usually programmable by the user; it uses a cheaper, less powerful processor and needs less power.
Give two advantages of using an embedded system rather than a non-embedded (general purpose) computer to do one dedicated job.: Any two of: it is simpler to design; it is cheaper to manufacture; it does its single job more efficiently.