Compare primary memory to secondary memory in a computer​

Explanation:

Primary memory is the computer memory that is directly accessible by CPU. It is comprised of DRAM and provides the actual working space to the processor. It holds the data and instructions that the processor is currently working on.

The contents of the secondary memory first get transferred to the primary memory and then are accessed by the processor, this is because the processor does not directly interact with the secondary memory.

Primary memorySecondary memory

1.Primary memory is temporary.Secondary memory is permanent.

2.Primary memory is directly accessible by Processor/CPU.Secondary memory is not directly accessible by the CPU.

3.Nature of Parts of Primary memory varies, RAM- volatile in nature. ROM- Non-volatile.It’s always Non-volatile in nature.

4.Primary memory devices are more expensive than secondary storage devices.Secondary memory devices are less expensive when compared to primary memory devices.

5.The memory devices used for primary memory are semiconductor memories.The secondary memory devices are magnetic and optical memories.

6.Primary memory is also known as Main memory or Internal memory.Secondary memory is also known as External memory or Auxiliary memory.

7.Examples: RAM, ROM, Cache memory, PROM, EPROM, Registers, etc.Examples: Hard Disk, Floppy Disk, Magnetic Tapes, etc.

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