Which of the following has lowest access time?
2020
Which of the following has lowest access time?
- A.
Main Memory
- B.
Optical disk
- C.
Cache
- D.
Registers
Attempted by 433 students.
Show answer & explanation
Correct answer: D
In computer architecture, the access time refers to the time it takes for the CPU to retrieve data from a storage location. The memory hierarchy is designed such that the closer a storage unit is to the CPU's execution unit, the faster (lower access time) it is.
Registers are located directly inside the CPU. They are the smallest and fastest storage elements in a computer system, operating at the same speed as the processor itself.