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This small program is still the use of timer, which is relatively simple. The specific parts are noted in the comments, please refer to the comments. /*********************************************...[Details]
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1. Classification of keys
Keys can be divided into two categories according to the structural principle. One is contact switch keys, such as mechanical switches, conductive rubber switches, etc....[Details]
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According to the Science and Technology Innovation Board Daily, on January 16, Yangtze Memory held an annual meeting of market partners. Gong Xiang, senior vice president of marketing and sales at Ya...[Details]
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Since General Secretary Xi Jinping proposed to build a global energy internet and promote the development of clean energy at the UN Development Summit last September, the call for energy internet h...[Details]
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I haven't written a blog on CSDN for a long time. Recently, I have some free time to learn about the low-power microcontroller STM8L051F3. The main application of what I made this time is to control ...[Details]
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(1) Real-time systems and front-end/back-end systems;
Foreground/background system: A large loop that loops to query various flags. If the flag is set, the corresponding service program is executed. ...[Details]
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60W Bass Amplifier
Amplifier parts:
R1__________________6K8 1W Resistor R2,R4_____________470R 1/4W Resistors R3__________________2K 1/2W Trimmer Cermet R5,R6_______________4K7 1/2W Re...[Details]
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I am now testing the circuit of a reflective infrared sensor. In the middle of the process, I need to do some simple tests on the circuit, so I wrote a test program and plan to post it. If any beginne...[Details]
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The advent of power MOSFET and IGBT has opened up a brilliant road for UPS, ushering UPS technology into a new era - the fully digital era. First, the input part of the UPS eliminates the power frequ...[Details]
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1System hardware design
The system structure is shown in Figure 1. It uses AT89C55 and AT89C51, the 51 series single-chip computers produced by ATMEL Company, as the core. The host computer uses AT...[Details]
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ACDC switching power supply has an important technical parameter - power-off holding time, which refers to the time difference ⊿t from AC power off to the output voltage dropping outside the accu...[Details]
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Tencent Meeting launches the "10,000 Rooms Ruyi" plan to help Chinese companies create a new normal of efficient hybrid office and set a benchmark for equal and consistent "Ruyi" experience Beijing...[Details]
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LED energy-saving lamps are not only energy-saving, but also have long lifespans and other advantages, and are very popular among people! So far, we have introduced the production process of LED en...[Details]
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The frequency converter is a device that converts the industrial frequency power supply (50Hz or 60Hz) into AC power supply of various frequencies to achieve variable speed operation of the motor. ...[Details]
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A single-phase to three-phase inverter is a power conversion device that converts single-phase AC power into three-phase AC power. It is widely used in industrial automation, power systems, househo...[Details]
Analogue and Mixed Signal
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