[table=98%][tr][td][b]Introduction[/b] At present, there are many kinds of special keyboard interface chips for single-chip microcomputer applications, but most of them are used in occasions without s
[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
[i=s]This post was last edited by paulhyde on 2014-9-15 09:44[/i] How to implement an infrared temperature sensor to distinguish between people coming in and going out? Experts with ideas, please give