Computer Memory Basics
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Questions and Answers

What determines the size of the memory?

  • Access mode
  • Storage capacity (correct)
  • Permanence storage
  • Access time
  • Where are programs and data available for use by the computer?

  • Storage (correct)
  • Processing unit
  • Output
  • Input
  • What is the key feature of internal memory?

  • Limited storage capacity
  • Temporary storage
  • Fast access and high cost
  • All of the above (correct)
  • What is primary storage also called?

    <p>Memory</p> Signup and view all the answers

    What type of memory is used as temporary memory?

    <p>Volatile memory</p> Signup and view all the answers

    What is a correct definition of volatile memory?

    <p>It loses its contents on failure of power supply</p> Signup and view all the answers

    Cache and main memory will not hold their contents when the power is OFF because they are what type of memory?

    <p>Volatile</p> Signup and view all the answers

    Which of the following is not an access mode?

    <p>Continuous</p> Signup and view all the answers

    What is the main characteristic of RAM?

    <p>It is a temporary storage area</p> Signup and view all the answers

    What is the purpose of virtual memory?

    <p>To allocate hard disk space to supplement the immediate, functional memory capacity of RAM</p> Signup and view all the answers

    What is the characteristic of information stored in RAM?

    <p>It needs to be refreshed periodically</p> Signup and view all the answers

    What is the type of storage that retains its data after the power is turned OFF?

    <p>Non-volatile storage</p> Signup and view all the answers

    What is the advantage of DRAM?

    <p>It is cheaper than SRAM</p> Signup and view all the answers

    What is the permanent memory built into your computer?

    <p>ROM</p> Signup and view all the answers

    What is the type of memory that contains permanent instructions that the computer uses when it is turned ON?

    <p>ROM</p> Signup and view all the answers

    What type of disc content is recorded at the time of manufacture and cannot be changed or erased by the user?

    <p>Read only</p> Signup and view all the answers

    Study Notes

    Memory

    • Storage capacity represents the size of the memory.
    • Data is saved permanently in Storage.
    • Programs and data to be used by the computer are available in Storage.

    Types of Memory

    • A computer has two types of memory.
    • Primary storage is fast and expensive compared to secondary storage.
    • Internal memory is also called main memory.
    • The two kinds of main memory are ROM and RAM.

    RAM (Random Access Memory)

    • RAM is used as temporary memory.
    • It is volatile memory, meaning it loses its contents on failure of power supply.
    • It is a temporary storage area and is a primary memory.
    • Information stored in RAM needs to be refreshed periodically.

    ROM (Read-Only Memory)

    • ROM is permanent memory built into a computer.
    • It contains permanent instructions that the computer uses when it is turned on and cannot be changed by other instructions.
    • It is non-volatile memory, meaning it retains its contents after the power is turned off.

    Cache Memory

    • Cache and main memory will not be able to hold their contents when the power is off.
    • They are volatile memories.

    Access Mode

    • There are three access modes: Random, Sequential, and Direct.

    Virtual Memory

    • Virtual memory allocates hard disk space to supplement the immediate, functional memory capacity of RAM.

    DRAM and SRAM

    • Dynamic RAM (DRAM) consumes more power and is slower than Static RAM (SRAM).
    • SRAM is faster than DRAM.
    • The advantage of DRAM is that it is cheaper than SRAM.

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    Description

    Learn about the different types of computer memory, including primary and secondary storage, and the characteristics of RAM and ROM.

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