Main memory
I can describe the purpose of RAM, ROM and cache in a device.
Main memory
I can describe the purpose of RAM, ROM and cache in a device.
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Lesson details
Key learning points
- RAM is volatile and ROM is non volatile.
- RAM stores data and instructions currently in use.
- ROM stores the start-up/boot-up instructions.
- Cache is used for frequently used instructions.
Keywords
RAM - random access memory — temporary memory used to store data and instructions that the CPU needs while the computer is running
ROM - read-only memory — stores essential instructions needed for the computer to start up and operate
Cache - a small storage location for frequently used instructions
Virtual memory - borrowed storage located in secondary storage, used when the RAM is full
Common misconception
RAM stores data and instructions when a computer is switched off.
RAM is volatile — when power is switched off, the data and instrucions are lost.
To help you plan your year 10 computer science lesson on: Main memory, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 10 computer science lesson on: Main memory, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
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Equipment
Pupils do not require any specific equipment for this lesson.
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Assessment exit quiz
6 Questions
temporary storage for current data
stores start-up instructions
small, fast storage for frequent instructions
secondary storage used when RAM is full