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A satellite navigation system (Sat Nav) uses RAM and ROM - OCR - GCSE Computer Science - Question 3 - 2019 - Paper 1
Question 3
A satellite navigation system (Sat Nav) uses RAM and ROM. (a) Tick (✓) one box in each row to show whether each of the statements is true for the RAM or ROM in a Sa... show full transcript
Worked Solution & Example Answer:A satellite navigation system (Sat Nav) uses RAM and ROM - OCR - GCSE Computer Science - Question 3 - 2019 - Paper 1
Step 1
Tick (✓) one box in each row to show whether each of the statements is true for the RAM or ROM in a Sat Nav.
Answer
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Stores the boot up sequence of the Sat Nav.
This is true for ROM because ROM (Read-Only Memory) stores firmware, which is crucial for booting.
- The contents are lost when the Sat Nav is turned off.
This is true for RAM because RAM (Random Access Memory) is volatile and loses its data when power is cut.
- Holds copies of open maps and routes.
This is true for RAM as it temporarily stores data such as maps during operation.
Step 2
Define what is meant by an 'embedded system'.
Answer
An embedded system is a computer specifically designed to perform dedicated functions within a larger system. It typically consists of hardware and software designed to operate within specific constraints, often with real-time computing capabilities.
Step 3