Today, I was reading the datasheet of AT89S51. After reading the following text, I am still not very clear about when P0 port needs an external pull-up resistor and when it does not. Please answer me,...
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As the title says, I downloaded the program to STM32 through ULINK and it ran normally. However, after power off and then back on, the program would not run. It would not run if I burned the program a...
I bought a MSP-EXP430FR5739 development board for RF development. Most RF chips are 1.8~3.6V, but I only have one Launchpad, which makes it difficult to test. So I need another MSP-EXP430FR5739 develo...
I am currently using PADS Logic VS.1.2 software to draw schematics and PCBs. I have encountered the following problem (1): The capacitance of the capacitor in the diagram cannot be changed. The dialog...