design a finite state machine and implement this FSM as a controller

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Muhammad Jawad_1506168438

Joined Sep 23, 2017
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I need help in the Truth Table of this Project. How to proceed If you give me any hint, It would be helpful.
I have to design a finite state machine and implement this FSM as a controller.
For a simple 8-bit calculator with a hexadecimal output.
It has a single 8-bit input (switches a user would set) and 5 buttons (+, -, *, /, and =).
The calculator takes 2 numbers sequentially. The user indicates that the first number has been entered in the 8-bit input by selecting an operator (changing the operator should update the number read from the input). Whenever an operator button is pressed, the display should be updated with the current value of the first number. Once the equals (=) button is pressed, the calculator should read the second number from the input and display the result. At this point the calculator should be ready to read a new number from the input.
 
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