[url=http://tc.people.com.cn/n/2013/1022/c183175-23282748.html]http://tc.people.com.cn/n/2013/1022/c183175-23282748.html[/url] [color=rgb(51, 51, 51)][font=SimSun]Original title: British Telecom and H
Question: If the 555 timer only has the trigger signal TRIG and is not connected to the RC charge and discharge circuit, what level state will the output terminal OUT of the 555 timer be in?
89c58X2 single-chip computer, controls AC motor, model is YYJCZ80-25, 25w, 220v AC, 0.26A, the relay used is Omron's RTE24730, 470V varistor is connected at both ends of the relay coil to prevent reve
[url=http://www.yklink.com/][size=3][color=black]Twisted Pair Video Transmission[/color][/size][/url][size=3][color=black]The system is mainly used in the following three environments to best demonstr
As a beginner, I use a Dell PDA and deploy a program into it through .net2005. However, I can only run the program by finding the installation directory of the program through the PDA's resource manag
[i=s] This post was last edited by a bystander on the road on 2014-5-23 10:08 [/i] [align=center][/align][align=center][/align] [align=center][b][size=6] has been published [/size][/b][/align]