4 ms·
The reader boards work like a circular buffer. If you pay attention to where the pointer is, you may even jump ahead a few spots by entering the right queue.
by mertd 8y ago
The reader boards work like a circular buffer. If you pay attention to where the pointer is, you may even jump ahead a few spots by entering the right queue.
- TeMPOraL 8y agoDepends on the implementation. In Poland, in all the stores I've seen employing single queue for multiple registers, the board is controlled by cashiers - there's a button at the register that the cashier can press when they're ready for the next customer, and the board always displays the number of the register that signaled readiness most recently.