I would like to ask you guys, when this circuit is connected to high level and low level, and when it is suspended, what is the on and off state of the transistor, and what role does the diode play in
In order to prevent forgetting how to use this board after a long time, and to enable the lab juniors to easily start development, the burning and startup methods of Uboot and kernel are recorded here
No one could have imagined that around 2000, when the entire Internet industry was at a freezing point and no way to make a profit was reached, a small text message costing 0.1 yuan per message would
In daily life, knocking on the door is the action of knocking on the door panel to make it vibrate and make a sound. I designed an acceleration sensor (also called accelerometer) attached to the back