1. Experimental results All the lights are off. Then I press a button and the ()th light comes on. Then I press another button and the ()th light comes on. When I release the button, the light goes ou
Thermocouples are one of the most commonly used temperature detection elements in industry. Its advantages are: ① High measurement accuracy. Because the thermocouple is in direct contact with the obje
Which of the following control circuits is better?The MOS tube is turned on with 12V, and the 51 microcontroller is powered by 5V. I am not sure which of the following two control circuits is better.
[i=s]This post was last edited by mzb2012 on 2017-10-6 20:54[/i] [b][size=6]Human infrared sensor LED light[/size][/b] [b][size=5]1. Background[/size][/b] [size=4]When I have a baby at home, I sometim
[i=s]This post was last edited by michael_llh on 2016-10-11 20:20[/i] [align=left][size=4] When we are interviewing for software development positions in Internet companies, we will inevitably be test