Fundamental components of a microprocessor, Computer Engineering

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Q. Fundamental components of a microprocessor?

The word 'micro' is used in microphones, microscopes, microwaves, microprocessors, microcomputers, microprogramming, microcodes etc. It means small. Amicroprocessor is an illustration of VLSI bringing whole processor to a single small chip. With popularity of distributed processing emphasis has shifted from single mainframe system to independently working workstations or functioning units with their own RAM, CPU, ROM and a magnetic or optical disk memory. So the arrival of microprocessor has transformed mainframe environment to a distributed platform.

Let's summarise the fundamental components of a microprocessor:

Figure: Components of a Microcomputer

Please note the following in the above diagram:

• ROM stores the boot program.
• Path from CPU to devices is through Buses. However what would be size of these Buses?

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