Now a day's self service system is available in most of the restaurants that informs the customer about the status of their order. A display screen is used to flash the order numbers on the screen. The circuit is easy to assemble. It's a simple technique whenever the order is ready the chef presses the switch and numbers are displayed informing customers to collect their order. The syatem is helpful in two ways firstly removes the crowd at the counter and secondly saves the customer from unnecessary confusion. The circuits display the order number till 99 than again resets the counter. Therefore order numbers from 0 to 99. This circuit is based on 4026 IC which is a Johnson counter IC commonly used in digital display. It can be used in various application like in 7 segment decimal display circuit, in clocks, timer etc.
