Correct option is A
Primary memory of a computer refers to the memory that is directly accessible by the CPU and is used to store data and instructions currently in use. RAM (Random Access Memory) is the main component of primary memory because it allows fast read and write operations required during program execution. It is volatile in nature, meaning data is lost when power is turned off. Since it plays a direct role in processing and execution, RAM is considered the primary memory of a computer system.
Information Booster:
- Primary memory includes RAM, ROM, and cache memory, but RAM is the most commonly referred component.
- RAM is volatile memory, meaning it loses data when power is switched off.
- It provides high-speed access to data compared to secondary storage devices.
- Types of RAM include SRAM (Static RAM) and DRAM (Dynamic RAM).
- It is used to store operating system, applications, and active data during processing.
Additional Knowledge:
. Option (b) DVD is secondary storage used for data storage and not directly accessed by CPU during execution.
. Option (c) USB is also a secondary storage device used for data transfer and storage.
. Option (d) CD is an optical storage device, not primary memory.
. Primary memory is faster but limited in size, whereas secondary memory is slower but has larger storage capacity.
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