LM324 operational amplifier, 0.5 yuan each (300 fast) Integrated amplifier TBA820M 0.5 yuan each, 200 pieces in total (can be used to make computer speakers) Authentic imported motoroal 1W voltage reg
[i=s]This post was last edited by ljj3166 on 2014-11-19 19:24[/i] [media=x,860,530]http://v.youku.com/v_show/id_XODMwMjkyODk2.html[/media] [b][size=3]First dig a hole[/size][/b] [b][size=3]Wait for th
What are the improvements made to the commonly used interface chips of Pentium series machines and 8086 machines? How does the DOS operating system manage PC I/O devices? What is the composition of in
Recently, I have been using the EM-AT91SAM3U development board developed by Embest (the chip is SAM3U launched by ATMEL, which is very powerful, especially the USB2.0 high-speed interface, up to 480BP
The problem is as follows: Two applications want to call the same stream driver at the same time, but after one application opens the driver, the other program cannot open and load the driver. Does an