Registers in Computer architecture

Registers in Computer architecture Definition

In Computer architecture (CA), a CPU (central processing unit) register is a small amount inbuilt storage available on the processor. It is the fastest memory in a computer system and is highly expensive. Register has less access time as they are built on the CPU itself unlike the RAM (Random access memory).

Operations Performed by the Registers:

  • Fetch
  • Encode
  • Decode

Different Types of Registers:

  • Memory Address Registers (MAR)
  • Program Counter (PC)
  • Accumulator (AC)
  • Memory Data Register (MDR)
  • Index Register (IR)
  • Data Register
  • Memory Buffer Register
  • Input Register
  • Output Register
  • Instruction Register
  • Temporary Register
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