Design principle and goal:The constant current source chip outputs constant current to the LED, and the single-chip microcomputer controls NMOS+PMOS to achieve LED high brightness for 200us, cycleProb
When developing a vending machine, you need to connect the MDB banknote and coin reader and non-cash payment device to a computer, or an Android motherboard, or a PLC. Why do you have to use an MDB-RS
Compared with traditional wired microphones, the biggest advantage of wireless microphones is that they are "wireless"! They are connected to the sound source through wireless carrier waves, which mak
Recently, when dealing with some engineering problems, I am confused by some statements about capacitors. Can anyone accurately explain the three terms: stray capacitance, parasitic capacitance, and d
I added the #include "sipapi.h" file to the EVC project, and added coredll.lib to the "Object/Module Library". When I called SipShowIM(SIPF_ON); in the program to call the soft keyboard, an error occu