Design a system in Proteous in which two digital inputs are included and the outputs of the system is a single digit number to a seven segment display. One of the inputs will cause the number on the seven segment display to count upwards from $0$ till $9$ and the other input will cause the seven segment to count down from $9$ till $0.$ Your answer should include the following

a$)$ The circuit diagram used in Proteous$(10$ marks$)$

b$)$ The flowchart of the program$(20$ marks$)$

c$)$ The commented code for the program$(20$ marks$)$

d$)$ Explain which ports were used as input and which were used as outputs$(10$ marks$)$

e$)$ Was a counter used in the system$(10$ marks$)$

f$)$ Did you use a polling or an interrupt for the program. Explain why?$(10$ marks$)$

g$)$ Demonstrate the system to the instructor$(20$ marks$)$