Instruction Register and Decoder

Instruction Register and Decoder  

Instruction register is 8-bit register just like every other register of microprocessor. Consider an instruction. The instruction may be anything like adding two data's, moving a data, copying a data etc. When such an instruction is fetched from memory, it is directed to Instruction register. So the instruction registers are specifically to  store the instructions that are fetched from memory. There is an Instruction decoder which decodes the information present in the Instruction register for further processing.