A briefcase that, when opened, activates a bomb that will explode in $60$ seconds if a $4-$digit code is not entered on a $4$x$4$ keypad. There is a $2$x$16$ LCD display that indicates in the first line "ACTIVATED$=$XX$"$ where XX is the number of seconds counting down from $60$ to zero. The second line shows the characters being typed from the $4-$digit secret code to deactivate the bomb; four numbers and the symbol # are typed for each attempt. If deactivated successfully, the first line will indicate "DEACTIVATED." If the $60$ seconds are consumed, the display will show "BOOM!!!" flashing for $5$ seconds. We must place a speaker with a capacitor in series to make a "beep" every second to make the bomb simulation more realistic. When it explodes, try to make some noise in this speaker.

There should be a mechanism to program the security code. This is when the bomb is deactivated; I can press the $"$C$"$ key, and the display then asks for a $4-$digit code and press the $"$A$"$ key to enter the new code that will work from then on$.$

The mechanism to activate will be to close the briefcase, press a switch, and when the briefcase is opened, the countdown described is activated. Also, place a red LED that, when turned on$,$ indicates that the bomb and countdown are active. When deactivated, this red LED will turn off.

Try to develop a sound in the speaker that is more like a real explosion.

Note: This task must be implemented in MikroC using a PIC$16$F$887$ microcontroller. Please include a screenshot from the simulator, preferably PROTEUS.