- Basic take-a-number system using the 8051 architecture.
- Has two dual common cathode 7-segment LEDs, one for the queue number (number taken by customer) and another for the service number (number shown on the screen, calling for a customer).
- Has three buttons: one button for incrementing queue number, one button for incrementing service number, one button for decrementing service number.
- Has a buzzer that activates temporarily for every service number increment/decrement.
- Code intended to be memory efficient, although certain parts in the code could be improved.
- Has debouncing check for buttons (instantaneous, no delay/flicker in 7-segments during debouncing check. May vary on each person's build though).
- Feel free to improve upon the code as you see fit! No need to give me credits if you want to use this code as a base or reference.
- I am not responsible if you get caught copying this code for your homeworks or assignments.
- None so far, open a(n) pull request/issue if required..
This circuit diagram is outdated. Additional components such as a button (for service number decrement) will be required for the code to work at its full potential. I am also not sure if the order in which the numbers are shown is reflected properly onto this circuit diagram. Please refer to the code when "completing" the circuit diagram for your usage. I will fix this later when I find the time to, in the meantime open an issue if you need assistance.
Using the above design (common cathode setup) breaks the simulation run in Proteus. I am not sure of the reason and the solution behind this problem. For the circuit to work in Proteus, change the setup of the 7-segments from a common cathode to a common anode setup. If you know the reason why or how to solve the problem, please edit and issue a pull request for this file (README.md) and I will go through it.