When measuring capacitance with a capacitance meter, a negative sign is displayed before the measurement result. Even if the needle is swapped, the negative sign is still displayed. What is the reason
1. Introduction
Originally, I wanted to design a portable device for people entering tunnels or mines to wear. Since there are no NB or 4G signals in tunnels or mines, signals can only be transmitted
Using the opamp6 of stm32g474 configured in voltage follower internal connection mode, connected to adc4 internally, the sampled adc4 data is always zero, and opamp6_vinp cannot be changed.
opamp6_vin
[i=s]This post was last edited by Jacktang on 2020-9-21 21:05[/i]As one of the main ways of interaction between humans and machines, the human machine interface (HMI) is a fundamental part of process
Let's do an exercise directly and define a function to exchange the contents of two variables.
void swap(int *x, int *y);void main(){int x = 20, y = 10;swap(x, y);printf("x = %d, y = %d", x ,y);}void