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Which Memory Unit has Lowest Access Time?
By BYJU'S Exam Prep
Updated on: September 13th, 2023
The smallest and fastest type of computer memory is called register memory. The smallest data holding units, known as registers, are found in the CPU and are not a part of the main memory. A register serves as a temporary storage location for the CPU’s commonly used data, instructions, and memory addresses.
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Answer – The register memory unit has lowest access time.
A tiny amount of data between 32 and 64 bits is stored in registers. The quantity and size (number of bits) of registers a CPU has built-in determine its speed. Depending on their intended application, registers can be of many sorts. Accumulator (AC), Data Register (DR), Address Register (AR), Program Counter (PC), I/O Address Register, and others are some of the Registers that are frequently utilized.
The benefits of register memory are as follows. It executes the instructions more quickly than the main memory since it is the quickest memory block. The CPU processes instructions in a very straightforward manner with the aid of registers. There are very few CPUs in today’s digital world that do not contain registers.
Summary:
Which Memory Unit has Lowest Access Time?
Register memory unit has lowest access time. Being the fastest memory block, it processes the instructions more quickly than the main memory.
