Question

Why microcontroller cant be used in place of microprocessor?

Answer 1

Comparing microcontroller and microprocessor in terms of cost is not justified. Undoubtedly a microcontroller is far cheaper than a microprocessor. However microcontroller cannot be used in place of microprocessor and using a microprocessor is not advised in place of a microcontroller as it makes the application quite costly. Microprocessor cannot be used stand alone. They need other peripherals like RAM, ROM, buffer, I/O ports etc and hence a system designed around a microprocessor is quite costly.

Answer 2

" A micro computer is small, relatively in expensive computer with a microprocessor as it central processing unit (CPU).It include a microprocessor ,memory and minimal input / output (I/O) circuitry mounted on a single printed circuit board."