Dear experts: What is the main task of OpenDeviceKey and RegQueryValueEx? [color=#FF0000]hKey = OpenDeviceKey(regKeyPath);[/color] if ( hKey == NULL ) { DEBUGMSG(ZONE_INIT | ZONE_ERROR,(TEXT("Failed t
Our 3G license has just been issued, and we haven't even had time to try it out yet, but the 4G concept phone has already come out. We have to keep up with the times. What is 4G? 4G is a combination o
A microphone, an ultrasonic transmitter, a controller, and other discrete components. When something hits a glass, the microphone receives the sound wave signal, which is analyzed by the controller to
, implement the programming of 8255 three ports, output data from one port and input data from another port, and judge whether the input data and output data match. If they match, then conversely, out
I used two ADC channels and found that when collecting the same signal, the ADC reading of one channel was always 20-30 more than the other.
Has anyone ever encountered such a situation?
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