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Buttons are relatively complex and can be represented by a state machine.
Execute a keyboard scan task every 10mS
0, no key, if there is a key, enter state 1
1. The first time a key is detected, ...[Details]
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1. Circuit Design Ultrasonic Module Introduction Ultrasonic waves are often used to measure distances because they have strong directivity, slow energy consumption, and can travel farther in the medi...[Details]
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On July 18, at the welcome dinner of the 2019 Jiwei Semiconductor Summit held in Haicang, Xiamen, Zhou Zixue, Chairman of the China Semiconductor Industry Association and Chairman of Semiconductor Ma...[Details]
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In industrial measurement and control systems, there are often harsh on-site detection environments and scattered equipment. The detection system needs to have remote distributed data acquisition fun...[Details]
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MCU model STC 89C52RC #include reg52.h #define RldTmr(fr) 65536 - (11059200 / 12) / (fr 1) #define FuDian(n) (n 1) / 3 //Conversion of dotted nth note typedef unsigned char UCHAR; ...[Details]
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In 2021, when autonomous driving technology is not yet ready for road use, some V2X technologies will become the focus of the implementation of intelligent connected technology. Four automakers ha...[Details]
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LTE (Long Term Evolution) is a new generation of communication technology that meets people's demand for large amounts of data in the current information age. LTE uses new technologies and new modula...[Details]
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The electric vehicle industry is booming, and in just a few years, its development speed has been as fast as a wild horse. However, for many European countries, insufficient battery production has...[Details]
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LED power supply is also a supporting product. The quality of power supplies on the market is uneven. Here we provide some relevant knowledge about LED driver power supplies for those who are new t...[Details]
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This article talks about testing the distance through ultrasound and displaying the measured data in real time on LCD1602. When the measured distance is less than 10CM, the LED light will light up. Th...[Details]
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Abstract: An electronic ballast is a type of ballast, which refers to an electronic device that uses electronic technology to drive an electric light source to produce the required lighting. The el...[Details]
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At the fifth "Huawei Asia Pacific Innovation Day" held on the morning of September 3, Xu Wenwei, director of Huawei and dean of the Strategic Research Institute, said that Huawei has obtained more th...[Details]
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Abstract: This paper introduces an intelligent control system for a combine harvester with a P87C2591 single-chip microcomputer as the main controller, and grain flow sensors, grain moisture sensor...[Details]
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Electronic police is a method that uses automated detection and measurement technology to capture traffic violations or traffic accidents, and uses the network to transmit the collected information ba...[Details]
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On November 19, analyst Jeff Pu mentioned in a report that the iPhone 17 and iPhone 17 Air will be the first to be equipped with the A19 chip, and the iPhone 17 Pro and iPhone 17 Pro Max will be th...[Details]