The circuit which is designed by using counter 、 decipherer and not gate digital IC, has the multifunction of the sound light displaying 、 overtime alarming and electronical tally. It can be used in manifold intelligence competition situation.
利用计数器、译码器、非门等数字集成电路设计的抢答电路具有声光显示、超时报警与电子计分等多种功能,适用于各种智力竞赛场所。
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