What is Registors, Definitions & Application
Authored By: Ankita Prajapati
A register is a type of data storage device used to store data and instructions temporarily. Registers are usually small, fast memory units that are used to speed up the execution of instructions by a computer’s central processing unit (CPU). Registers are used to store data and instructions that are being processed by the CPU or that are waiting to be processed.
Registers are also used to store data that is frequently used by the processor, such as the program counter (PC).
This is a register that stores the address of the next instruction to be executed. The processor can access this instruction quickly, without having to search through the main memory.
Registers are also used for holding data that is used in arithmetic and logical operations.
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This can include data such as the results of a calculation, and the state of the processor flags, such as the carry flag.
Registers can also be used to store data that is used in branching operations.
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This can include the program counter and the state of the condition codes.
The condition codes are used to determine whether or not a certain instruction should be executed, based on the results of a comparison.
For example, the condition code might indicate that the instruction should be executed if a certain value is greater than another.
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Registers are a vital part of any computer system, as they enable the processor to access data quickly, and to perform calculations and branching operations efficiently.
They are an integral part of the processor‘s architecture, and are used in all modern computers.
Applications
- They are used to store data and instructions temporarily while they are being processed by the CPU.
- They are used to store the address of the next instruction to be executed.
- They are used to store the intermediate results of calculations.
- They are used as buffers to store data and instructions that are being transferred between the main memory and the CPU.
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