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Teach you step by step how to learn 51 microcontroller and Proteus Lecture 12 on the principles and programming of asynchronous serial port communication
I use the following method to control the ultrasonic generator to send ultrasonic waves
On the left are two complementary outputs, a 50% duty cycle, and a 40KHz square wave frequency.
In the middle is
Recently, during the Boao Forum for Asia in Hainan, Lou Qinjian, Vice Minister of the Ministry of Information Industry, gave a clear answer to the question of "when will 3G licenses be issued" and sai
Upload the latest version of KEIL 51 software vision4beta1, it looks very good, this is the version without PJ, if you have uvision3 registered on your machine, you can install it directly and use it,