Q$.3_i$

In an open$-$loop speed$/$direction control of a stepper motor application, it is desired to specify the speed and direction using $2$ push button switches: "Right$/$Left$"$ switch on RBO and "FasySIow" switch on RBI. Assume that the controller will be based on PICI$6$F$84$A and the stepper motor works on the double mode only $($no need to write the single mode$).$

a$)$ Sketch the system hardware.

b$)$ Write the necessary C$-$code program.