These are all necessary knowledge subjects for electronic engineers and technicians. They are interrelated, have theoretical basis and practical application, and their importance is self-evident. You should study hard now and tell you their purpose as usual. You need to type a lot of words.

The circuit in the university is different from that in your high school, so it is essential to design the circuit in the future.

Science and technology are advancing by leaps and bounds. Electronic equipment, such as medical instruments, includes almost all engineering disciplines. For example, a bedside monitor first uses several sensors:

1, ECG connection: this uses materials science. After research, it is found that it is best to use silver electrode to collect ECG signals.

2. Blood pressure: cuff is used, and there is a pressure sensor in the machine.

3. Body temperature: Use a thermistor.

4. Oxygen saturation: use photoelectric.

These physiological information of human body should be measured by circuits designed by engineers and technicians. These circuits first use the circuit foundation. How to connect them? Using analog circuits, how to amplify, shape, filter and so on; Using digital and logic circuits, how to measure and process signals; Also used electrotechnics; How to make the power consumption of equipment small, ensure the safety of electricity use and so on.

Electronic technology is a very profound subject. It's interesting to learn from it, so study hard!