Electronics lesson: electronic parts, electronic components, electronic projects, circuit diagram and more
Consider the circuit, HC908QY4 is the heart of all. It uses a pin PTB0, PTB1 and PTB2 to control and display the text on the LCD. This leads to (shift regiter – serial to parallel converter) CD4094 that we will provide the data bus to LCD display.
In the CD4094 data are synchronized on the rising edge and the LCD display will take on the falling edge shows us that this signal can be shared.
If you want a wireless audio system there are several ways to do it. The simplest is to use infrared light that is modulated audio signal to be issued. In the circuit that receives light, it will demodulates, amplifies it and deliver it to the loudspeakers.
This circuit produces the classic bell chime “Ding-Dong” but no mechanical parts used to it. With integrated designed for such use and some components will achieve the same effect and solid state (no moving parts).
