can anyone help me in doing d module for sales record system?
The steps are as follow:
1. first, user use a card to touch in and d system check his status about the balanced quota.
2. if his status is ok, then he can make his purchase or else he'll leave d system.
3. then, the system will update d balanced quota.
4. print receipt for customer.
5. sent sales record to monthly report.
6. before leave, he has to touch out to make sure he can make purchase next time.

thanks :)