[table=98%] [tr][td][p=25, null, left][color=#4e4e4e][font=Arial, Helvetica, simsun, u5b8bu4f53]A tri-state gate is a gate circuit whose output has a third state, high impedance, in addition to the tw
I recently helped a friend make a video 2-input 9-output distributor. The schematic diagram of the initial design is shown in Figure 1. I used CD4066 for signal switching. I also found relevant exampl
The navigation industry has been booming around the world due to factors such as the acceleration of urban construction, the increase in car ownership, the expansion of roads, and the increasing compl
I am developing a PDA software under EVC4.0 and PB4.2. I have two questions: 1. I have realized that the soft keyboard pops up when the edit box of the dialog box gets the focus. When the ESC key of t