The "first bid in the country" for tax -control cash registers was issued recently in Guangdong Province, and five companies won the bid. On February 15, the Guangdong Provincial Government Procureme...
I need help: After the synchronous motor is powered on, the rotor keeps rotating 8 or 9 degrees forward, and then 8 or 9 degrees reversely, and keeps doing this cycle. The interval seems to be between...
A little learning method for analog electronic circuits1. Summary 1. Identification of feedback circuit (1) If there is a reverse transmission path for the signal in addition to the amplification path...
I DIYed an MP3 module, but it doesn't work properly. VS1053 can't read or write registers.The main function test code is shown above. The value of the VOL register is 0 when viewed through the serial ...
There are many cars on the highway, and the speed is very high. Serious accidents happen from time to time. The anti-collision radar using DSP for real-time processing can make judgments and start the...