1. The [BLANK] is the brain of the computer. It uses [BLANK] to store data temporarily during processing, and [BLANK] memory is used to speed up data access.
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Word Bank:
CPURAMROMCacheRegister
The is the brain of the computer. It uses to store data temporarily during processing, and memory is used to speed up data access.
📋 Mark Scheme:
The CPU:
1. Fetches instructions from memory (1 mark)
2. Decodes the instruction to understand what needs to be done (1 mark)
3. Executes the instruction by performing the required operation (1 mark)
4. This cycle repeats continuously (1 mark)
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2. A car comes with many embedded systems, for example parking sensors.
Identify one other embedded system that could be found in a car and explain why this is an
embedded system
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📋 Mark Scheme:
1 mark for example: e.g.
• Auto lights
• Auto window wipers
• Sat nav // GPS
• Airconditioning // climate control
• Radio/entertainment/infotainment system/media
system
• Lane assist
• Engine management system
• Auto-park
• Cruise control
• Auto-brake
• Follow-me
• Dashcam
1 mark each to max 2 for explanation.
• Limited functions // by example e.g. the system
only checks the light and turns lights on/off
• Dedicated microprocessor // by example e.g.
there is a microprocessor that is only checking
the lights
• Hard to change function // by example e.g. the
user cannot make the light system do any other
role