The memory unit that communicates directly with the CPU is called _______ memory.
main
The main memory (RAM) is the memory unit that the CPU accesses directly during program execution. Programs and data must be loaded into main memory before the CPU can operate on them.
- Main Memory (RAM): directly addressable by the CPU. It holds the currently executing programs and their data. ✓
- Cache Memory: a small, very fast buffer between the CPU and main memory. It stores copies of frequently used data but is not the primary memory the CPU communicates with in the classical memory hierarchy definition.
- Auxiliary / Secondary Memory (HDD, SSD, tape): not directly accessible by the CPU; data must first be moved to main memory.
- Backup Memory: used for archival copies; not part of the execution path.
Therefore, the correct answer is main memory.
Similar Questions
- ______memory is sometimes used to increase the speed of processing by making current programs and data available to the CPU at a rapid rate.
Which among the following registers in Instruction Cycle holds the last instruction fetched?
- _______viruses are embedded in a system's memory so it can be reactivated if the original virus is deleted.
Which among the following statements is incorrect about secondary memory?
A computer system has a memory capacity of 4K x 8 bits. How many address lines are required on the address bus to identify every byte in this memory uniquely?
________ a high-speed device used in CPU that is utilised to store data temporarily during processing.
Which among the following statements is incorrect?
The instruction that is not to be executed immediately is placed in the ______.
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Important Questions from Memory
One Exabyte is equal to ______.
Which of the following needs to be refreshed to retain data even when power is on (electric current flows)?
Which of the following has the highest storage?
Which storage medium has tracks and sectors?
The actual timing signals that govern the transfer of data between input unit, processor, memory and output units are generated by the ________ and the ______ stores the processed data.
