Controller Based Quiz Buzzer The quiz buzzer systems are widly used in schools, colleges and TV programs at quiz competitions. The team that presses the button the earliest is allowed to answer. In the past it used to be difficult to judge when two or more teams press the button almost at the same time. Controllers work at micro sec levels. Hence using the controller to judge who pressed the button first is the way out. The System can also be supplied with the Wireless Technology Incorporated