Among them, port D4 is connected to a button, port C0 and port C1 are connected to an LED light respectively. Press D4, C0 lights up, C1 turns off, then press C0 turns off, C1 turns on, then press C1
JTAG interface1JTAG (Joint Test Action Group) is an international standard test protocol (IEEE 1149.1 compatible), mainly used for internal chip testing. Most advanced devices now support the JTAG pro
1. The voltage ratio of the transformer is 5:4, but the output voltage is far from this value when applied. The actual output voltage is about 20V lower than the theoretical value. For example: I inpu
[size=4][b]Pain is inevitable. Suffering is optional.[/b]Pain is inevitable, but suffering is optional. This is a quote from the writer Haruki Murakami in "What I Talk About When I Run". As a runner,