Explain the steps of the evolution of the microcontroller, Electrical Engineering

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Question:

a) Give one reason why a "subroutine" could be written into the body of the main program.

b) With the help of the diagram below, write down the sequence of the nine events which occur during the "storing and retrieving the return address".

1077_Evolution of the microcontroller.png

c) Comment on the four steps of the evolution of the microcontroller.

d) Differentiate between the ROM and RAM testing of the 8051 microcontroller.


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