What is instruction? Describe the processing steps of an instruction of CPU.

Free Discussion

Instruction : Instruction is command which is given by user to computer.Computer instruction is a set of steps or documentation that include information or how to operate, performs or maintain particular computer software or hardware.

• First of all both of the program that acts upon the data are loaded into main memory (RAM) by operating system. Then the 'CPU carries out' is to fetch some data and instruction from main memory then store them in its own temporary memory areas,, this is called fetch.


• The next step is for the CPU to make sense of the instruction it has just fetched. The CPU is designed to understand a specific set of CPU commands. These are called instruction set of CPU. The CPU decodes the instruction and prepares various areas within the chip in readiness of the next step.


• This is the part of the cycle when data processing actually takes place. The instruction is carried out upon the data.Once the execution stage is complete the CPU sets itself up to begin another cycle ones more.

Unfamiliar Word Meaning in Bangla

Decode : সংকেতলিপির অর্থোদ্ধার করা

Fetch : আনয়ন করা

Carry Out : সম্পন্ন করা

Effective : কার্যকর

Quote :

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