We make testing machines. In order to prevent customers from not paying, we need to make a button.For example, the software is allowed to be used by customers for one month. If the customer does not p
MOS tube drives the motor, and the load is connected to the drain end; MOS + op amp constitutes a constant current source, and the load is also at the drain end. I would like to ask, can the load be p
Dear seniors, I have recently been learning about high-order active filters. I have seen online discussions about the differences between Butterworth and Chebyshev filters, all of which are about freq
A friend's project needs to transplant fatfs and internal rtc on k50. I want to buy a board to verify it first. Do you have a k50 development board with sdhc interface sd card? It would be best if the
[i=s] This post was last edited by jinglixixi on 2018-6-29 13:42 [/i] The LPC8N04 [/size][/font][font=宋体][size=10.5pt] development board mainly consists of two parts, namely the debugger and the [/siz