Please help me explain the following program. I am used to Arduino, but I suddenly don't understand the SAM4L program. I have been reading the official routine for a day, but I don't understand what t...
What circuit can achieve this function? There are two input signals, one is DC +12V, and the other is a square wave signal (after biasing, that is, there is no negative signal). The two signals share ...
I am using 89C51, the crystal frequency is 11.0592MHz, T0 is used to monitor external input signals. I would like to ask the experts to measure the 50Hz signal frequency of T0 port in 1 second. If it ...