I recently made a serial communication program. I can open COM3 successfully, but WriteFile fails. I don't know why. I checked the handle returned by CreateFile, which is 0x2FADFFC2, not empty. When I
[i=s]This post was last edited by jinglixixi on 2021-4-17 11:59[/i]Digital tubes are often used to display data in industrial sites. The main reason is that they have high display brightness, low cost
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I recently made AD and DA, and the AD input signal is required to be (0~10V, 4~20mA), and the DA output signal is also (0~10V, 4~20mA). After I used two voltage divider resistors of 1K and 1K, the AD
[url=http://digi.163.com/16/0913/18/C0S79GN2001687H3.html]Original URL[/url] [b]Abstract:[/b]After ten years, Vim finally released a new major version 8.0, ending the 7.0 generation that started on Ma