Overview of the Foundations and Fundamental Knowledge of the Electronic World

In our daily lives, electronic devices have become an indispensable part. From smartphones and tablets to household appliances and transportation, electronic technology has penetrated into every aspect of our lives. This article will provide you with an overview of the cornerstones and fundamental knowledge of the electronic world, helping you better understand this fascinating field

1、 Semiconductor devices

Semiconductor devices are the foundation of electronic technology, capable of transmitting, processing, and storing information. Semiconductor devices mainly include transistors, diodes, and integrated circuits (ICs). Among them, integrated circuit is a miniature circuit that integrates multiple transistors, resistors, capacitors, and other components together. It has the characteristics of small size, low power consumption, and superior performance, and is widely used in various electronic products

2、 Digital Signal Processing Technology

Digital Signal Processing (DSP) is a technology that processes digital signals. It mainly includes steps such as sampling, quantization, encoding, and decoding. Digital signal processing technology has a wide range of applications in audio, video, image and other fields, such as audio players, video editors, image processing software, etc

3、 Analog signal processing technology

The concept corresponding to digital signal processing is Analog Signal Processing (APS). Analog signal processing is mainly used to process continuous time signals, such as sound, light waves, etc. Analog signal processing techniques include filter design, amplitude frequency characteristic analysis, time-domain and frequency-domain analysis, and other methods

4、 Principles of Communication

The principle of communication is a theoretical system for studying the laws of information transmission. It mainly includes the processes of signal generation, transmission, reception, and demodulation. According to different communication methods and application scenarios, communication principles can be divided into two categories: wireless communication principles and wired communication principles. The principles of wireless communication mainly include modulation and demodulation technology, channel coding technology, multiple access technology, etc; The principles of wired communication mainly include fiber optic communication principles, twisted pair communication principles, etc

5、 Fundamentals of Computer Hardware

Computer hardware is the foundation of the electronic world, consisting of five main components: input devices (such as keyboards and mice), output devices (such as displays and printers), central processing unit (CPU), memory (RAM), and storage devices (such as hard drives and solid-state drives). Understanding the basic knowledge of computer hardware helps us better use electronic devices and write programs