The working current of LED is 10-40mA. Why can the LED still light up when the pull-up resistor is 1K ohm and the voltage is 5V? If so, why do people say that the working current of LED is 20mA? I rea
[i=s]This post was last edited by sylar^z on 2020-3-30 09:24[/i]The reason for making this was that a starry sky lamp toy I had was broken, so I planned to buy some lamp beads to repair it. When I fou
Recently, Tencent announced an important research progress - through AI technology, it drew for the first time the protein structure of the culprit of baldness "type II 5a reductase (SRD5A2)" - it can
stack - also known as the system stack, is used to: save the return address after a function call; allocate storage space for local variables; pass function parameters; save temporary results; heap -