Hardware Register

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In computing, a hardware register is a storage area for Digital electronics and particularly Computer hardware including the Central processing unit (CPU) and input/output (I/O) of different kinds. Information is conditionally transferred between registers, sometimes with a functional transform, such as an Adder (electronics).

Typical uses of hardware registers include configuration and start-up of certain features, especially during initialization, buffer storage e.g. video memory for graphics cards, and status reporting such as whether a certain event has occurred in the hardware unit.

Reading a hardware register involves accessing its memory- or port-address with a "load" or "store" instruction, issued by the processor. Hardware registers are addressed in words, but sometimes only use a few bits of the word read in to, or written out to the register.

Strobe registers are hardware registers which do not store data but are used as a means of triggering an action when they are accessed. They are a means of signaling (telecommunication).

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In digital electronics, especially computing, a hardware register stores bits of information, in a way that all the bits can be written to or read out simultaneously.

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