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JSS2: COMPUTER STUDIES - 1ST TERM

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  1. Computer Software | Week 1
    3Topics
    |
    1 Quiz
  2. Operating System | Week 2
    9Topics
    |
    1 Quiz
  3. Computer Memory: Primary And Secondary Memory | Week 3
    5Topics
    |
    1 Quiz
  4. Computer Memory II: Secondary / Auxiliary / External Memory | Week 4
    3Topics
    |
    1 Quiz
  5. Number System I | Week 5
    4Topics
    |
    1 Quiz
  6. Number System II | Week 6
    2Topics
    |
    1 Quiz
  7. Units of Storage In Computer | Week 7
    3Topics
    |
    1 Quiz
  8. Problem Solving Skills With Computer | Week 8
    7Topics
    |
    1 Quiz
  9. Computer Programming Languages | Week 9
    3Topics
    |
    1 Quiz
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  • Computer memory is the place where the computer stores all the data, and instructions it uses.
  • There are two groups of computer memory: – the primary/main or internal memory;  – the secondary, auxiliary, or external memory.
  • There are two kinds of Main memory: RAM and ROM.
  • With the RAM, information on the computer disappears when you switch off your computer, or when there is a power failure.
  • Unlike the RAM, the instructions on the ROM do not disappear when the power is turned off.
  • Information on the ROM can only be read.
  • Another name for RAM is “Read and Write Memory”.
  • The various forms of ROM include: PROM, EPROM, and EEPROM.
  • The various forms of RAM include: DRAM, SRAM, SDRAM, DD SDRAM.

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