46615

5G licenses have been issued. As the first batch of 5G mobile phones went on sale, a voice advocating the uselessness of 5G has appeared on the Internet. 在昨天OPPO副总裁沈义人发文谈自己对“5G无用论”的看法，沈义人称：“在5G资费进入大众...[Details]

　　With the development of electronic technology and communication technology, wireless communication and telemetry and remote control systems are widely used in various fields such as industry, agricu...[Details]

　　0 Introduction 　　Serial port RS 232 is a commonly used communication protocol for industrial control, instrumentation, and computer peripherals. The baud rate of serial communication is generally...[Details]

The display mechanism of the ZDS2022 oscilloscope is different in different trigger modes. In automatic mode, when the time base is less than 100ms/div, the ZDS2022 oscilloscope needs to collect a ...[Details]

Using a simple resistor to limit the current in the LED string seems to be the most economical and simple, so why bother using a linear driver IC? In fact, there are many benefits brought by li...[Details]

If the CPU is the brain of the computer and the current is the blood of the computer, then the clock is the heart of the computer. The clock frequency determines the speed of the processor's calculat...[Details]

Recently, I have a small thing that uses STM8S to drive. Before, I used the internal 16MHz RC clock of STM8S, and I have not tried to use an external crystal oscillator as the main clock. Today I wil...[Details]

1) C is taboo to absolute positioning I often see beginners asking to use _at_. This is a fallacy, treating C as ASM. In C, variable location is the compiler's job. As long as beginners define the va...[Details]

What is a frequency converter? The frequency converter is a power control device that changes the working power frequency of the motor by applying power electronics technology to control the m...[Details]

　　The switching power supply works in a high-frequency switching state, which will generate a very high current and voltage change rate inside, causing the switching power supply to generate strong e...[Details]

/* Name: Button Pronunciation Note: Pressing different buttons will cause the SOUNDER to emit sounds of different frequencies. This example uses the delay function to achieve sounds of different fr...[Details]

1 Introduction In the secondary system of power plants and substations, a reliable DC power supply is required to power control, protection, automatic devices, emergency lighting and other equipmen...[Details]

The previous article systematically talked about the classification of communication, including parallel communication and serial communication. The classification of serial communication includes sy...[Details]

High reliability, powerful functionality, high speed, low power consumption and low price have always been important indicators for measuring the performance of microcontrollers, and are also necessa...[Details]

The circuit of the 15V/3.5A, 52W switching power supply composed of MC33374T/TV is shown in Figure 3. The allowable range of its AC input voltage u is 92V~276V. VD1~VD4 are rectifier bridges. The p...[Details]