Registers – hold temporary data.
Instruction
register (IR) holds the
currently executing instruction.
Instruction
Decoder (ID) decodes the
instruction. Once decoded, the instruction controls the remainder of the MPU,
memory and IO through the timing and control block.
Temporary
register - holds information from
the memory or register array. An input of the ALU.
Increment/Decrements
address latch – It adds or
subtracts one from any of other registers in register array.
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more about 8085 Microprocessor Architecture
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