[size=4] Let's discuss what kind of competitions undergraduates or postgraduates can participate in? The Internet of Things seems to be quite popular now. [/size]
Cleverly use digital phase-locked loop to measure car speed Abstract : The digital phase-locked loop chip 4046 and the variable counter 4018 are used to measure the car speed. Through counting, decodi
I want to design a four-digit common-anode LED serial dynamic display circuit. I don't know whether to use 74HC164 or 74HC595. The original design is a two-digit serial static display circuit implemen
Hello everyone! I want to use high voltage electricity to electrocute or stun some flying insects to count them, and analyze the data according to the characteristics and time periods of different fly
[i=s] This post was last edited by jchjk800 on 2015-2-10 23:22 [/i] [color=#000] Pre-amplifier 0-100 times adjustable--------Filter (3-20KHZ to be determined)-------Post-amplifier 0-100 times adjustab