A button$-$fisplay system will be designed using STM$32$ microcontroller. There will be $2$ springed buttons and two $7-$segment displays in the system. First button will be used to display character $E($stands for "Evet"$)$ and second button for character $H($stands for "Hayir"$)$ when pressed.

a$.$ Draw the electrical architecture and connections for buttons and displays towards microcontroller. $($Select port$/$pins as you wish$)$ and explain the microcontroller configuration.

b$.$ Write the code which performs this task.