Take a look at the simplest electronic watch that cost 5 yuan and was played with when I was a child. It can be operated with only 2 buttons. Let's call them button A and button B. Here is a complete
Technical advantages: It works in the Chinese frequency band 780MHZ or the RFID dedicated frequency band 920MHZ. The frequency band is clean, avoiding interference from civilian wireless devices such
[i=s] This post was last edited by Mufan001 on 2016-12-14 15:51 [/i] [align=left][size=3][b]Power supply basics: Research on forward circuit topology structure [/b][/size][/align][align=left][size=3][
Seeing comrade jxb complain about being late, I was curious, how serious are the consequences of being late? Let me talk about us first. If you are late, I hope you can consciously extend the time. Of
my country has legislated September 3 as the Victory Day of the Chinese People's War of Resistance Against Japanese Aggression and December 13 as the National Memorial Day for the Victims of the Nanji