Under the wince5.0 platform, after dialing with the 3G\EVDO module, the dial-up connection shows "connected", but the web page cannot be opened. After a while, it prompts that the connection is lost,
I use 6 common cathode digital tubes. The P1 port connects to each segment of the digital tube, and the P0 port controls the on/off of the digital tube. I have connected it like this: A 9-pin 5.1K sin
This paper introduces a DC power supply control board system with single-chip microcomputer controlling thyristor trigger pulse as the core. The system realizes the synchronous generation, phase shift
I use 51, can I control the speed of the stepper motor by sending signals to the CLOCK terminal of L297 at different timings? How can I use multiple speed timers? Is it enough?