Generally give you a single chip microcomputer, which is available in the school laboratory, and then design some functions on it. I'll list some for you.

1, integrated digital alarm clock

1. 1 design tasks and requirements

(1) Clock function: It has a 24-hour or 12-hour timer mode and displays hours, minutes and seconds.

(2) It has the function of quickly calibrating hours, minutes and seconds.

(3) Alarm time can be set, and the alarm time is 1 min. If it exceeds 1 min, it will stop automatically; With manual alarm function; After the alarm stops, it will not be operated again and the alarm will not happen again.

(4) Timing accuracy: the daily timing error shall not exceed 10 second.

(5) Power supply mode: 220V, 50HZ AC power supply. When the alternating current is interrupted, the internal standby power supply will be automatically connected, and the timing function will not be affected.

2. Design of 2.DC variable regulated power supply.

3.OTL complementary symmetrical power amplifier

4.PID regulator

5. Active filter

6, the production of simple multimeter

7. Signal Peak Detector

8, corridor touch delay switch

9. Design of automatic faucet

10, simple traffic light control logic circuit design

1 1, waveform generator

12, overvoltage/undervoltage protection prompt circuit

13, music lantern controller

14, simple frequency meter

I have listed 1 in detail. In fact, it is just to design a circuit on a single chip microcomputer and then import the program.

2, 3, 4, 5, 6 and 7 are not difficult. As long as there are experimental classes in general schools, there should be all of them, and one class can be finished.

The latter part is a bit difficult, but 10 and 13 are classic and worth exercising by yourself.