Description: Responder is the answer in the countdown time digital display, countdown count down by 99 to 0, the beginning and end of the countdown will be issued when the buzzer and answer time to answer in the success of the tone. When players answer in the digital display shows the answer in an array of successful until the time player number before the end of the LED is not lit.
To Search:
File list (Check if you may need any files):
数字式4组竞赛抢答器的设计与制作.doc
Download