1.2.1 (1) - Primary Storage (RAM + ROM)

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Computer Science

GCSE Computer Science

OCR

Computer Systems

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7 Terms

1
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What is primary storage?

Memory used to store data and instructions currently in use by the CPU.

2
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What are the 4 main examples of primary storage?

RAM, ROM, Cache and Registers.

3
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What is the purpose of RAM?

RAM holds all the data and instructions currently being processed.

4
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What needs to be done before a program is executed?

It must be loaded into RAM from Secondary Storage. This is done because RAM has quicker R/W speed.

5
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Give 4 properties of RAM

  • Volatile

  • R/W

  • FAST

  • Has the largest capacity of all main memory (A few gigabytes)

  • Expensive

6
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What is the purpose of ROM?

ROM is used to store the boot sequence (BIOS) for a computer.

7
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What are the characteristics of ROM?

  • non-volatile

  • written by computer manufacturer

  • stores the BIOS

  • smaller capacity than RAM (A few megabytes)

  • Expensive