Question:
One of the following is not a Primary Memory :
AROM
BRAM .
CDRAM
DHard Disk
Answer:
D. Hard Disk
Explanation:
Primary Memory
- This memory is temporary memory.
- This memory is directly accessible by the computer’s Processor/CPU.
- The nature of Parts of this Primary memory varies because RAM- is volatile in nature while the ROM- Non-volatile.
- The devices of primary memory are more expensive than secondary storage devices.
- The memory devices used for primary memory are semiconductor memories.
- This memory is known as a device's main or internal memory.
- Example: RAM, ROM, Cache memory, PROM, EPROM, Registers, etc. are Examples.
Secondary Memory
- This memory is permanent memory.
- This memory is not directly accessible by the computer’s CPU.
- This memory is always Non-volatile in nature.
- The devices of secondary memory devices are not more expensive as compared to primary memory devices.
- The secondary memory devices are magnetic and optical memories.
- This memory is known as external memory or auxiliary memory of a device.
- Examples: Hard Disk, Floppy Disk, Magnetic Tapes, etc. are Examples.