I am a novice, and I would like to ask the experts: I use a mobile phone battery to power a 3.7V device with a load of <= 200mAh. The acquisition is a scanning head, 120mA, 5V, then Bluetooth, 40mA, a...
Nowadays, almost all computer motherboards do not have serial ports. Now, programs are downloaded using USB. So is there any meaning for the serial port application of microcontrollers? Don't ICs have...