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Phenomenon
The seven low tones "DO, RE, MI, FA, SO, LA, SI" are played in a loop on a passive buzzer.
Reference Program
1 Main function
#include REGX52.H...[Details]
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Introduction Class D amplifiers are more attractive to designers of portable audio applications due to their higher power efficiency than Class AB amplifiers. However, some designers do not use Clas...[Details]
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Recently, Zhejiang Lipu Crushing Equipment Co., Ltd. invested 50 million yuan to build a new "annual production of 1,200 high-efficiency and energy-saving ultra-fine pulverizer construction project...[Details]
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This paper takes energy conservation as the starting point, and designs an energy-saving control device according to the frequent braking characteristics of urban buses. Through this device, the orig...[Details]
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After the vehicle stops, the coolant automatically cools and contracts, and the previously discharged coolant is sucked back into the radiator, thereby keeping the coolant in the radiator at a suit...[Details]
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At present, the vast majority of electrocardiographs commonly used in hospitals in my country are electromechanical, which detect ECG signals through electrodes and record them directly after amplific...[Details]
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/***************************************************************************
Set GPIO basic parameters
***********************************************************************/
void GPIO_Configurati...[Details]
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With the rapid development of science and technology, many applications in the field of modern industrial measurement and control require the regular collection and storage of large amounts of data. ...[Details]
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The ATmega32 has an on-chip bandgap reference for brownout detection or as an input to an analog comparator or ADC. The 2.56V reference voltage for the ADC is generated from this on-chip bandgap refe...[Details]
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Traditional thermistor thermometers are mostly composed of ordinary single-chip microcomputers (MCS-51 series) + A/D converters and LED display modules. They have many discrete components, high pow...[Details]
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Analog Devices (ADI) will seize the opportunity in the wearable medical market with its ultra-low power analog front end (AFE) solution. With the rise of home care, the business opportunities in the ...[Details]
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In the field of industrial robots, ABB (Asea Brown Boveri) is one of the world's leading manufacturers, and its products are widely used in industries such as automobiles, electronics, and food and...[Details]
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Geely's brands are now playing an interesting strategy. First, Polestar announced that it would merge and go public through SPAC and Gores Guggenheim, with a post-merger valuation of about $20 billio...[Details]
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Industry statistics show that it is expected to reach 10.37 billion yuan by 2020. As the energy storage industry develops better, the industry's attention to integrated photovoltaic, storage and ch...[Details]
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Nvidia CEO Jensen Huang said on Wednesday during a visit to Denmark that the company's latest Blackwell chip had a design flaw. "The Blackwell chip can be used normally, but the yield rate is very ...[Details]
Microcontroller MCU
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