WORKING OF A MICRO-PROCESSOR

WORKING OF A MICRO-PROCESSOR


>>>>>>>>>>>>fetch
>>>>>>>>>>>>>>>>decoding
>>>>>>>>>>>>>>>>>>>>execute



Fetch op-code from memory.

Decode the code.

Execute according to instruction.

TAKING 8085 for testing and studying.

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Intel 8085 is 8 bit processor

It is n-mos device with 40 pin

It has multiplexed address and data bus ( AD 0- AD7 )

It work on 5 volts dc supply

It’s minimum clock frequency is 3 MHz . minimum frequency 500 KHz.

It provide 74 instruction with 5 different addressing modes.







































































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