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① Internal flag bit M: The "internal flag bit" in Siemens PLC is marked with the English letter M. Its function is equivalent to the "internal relay" commonly mentioned in PLCs of other companies. ...[Details]
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1 Introduction
The single-key switch circuit has been widely used in digital products such as PDA, mobile phones and electronic dictionaries. There are many ways to implement it. Generally, RS...[Details]
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The circuit is shown in the figure. IC1 and C1 form a low-frequency oscillator of about 400HZ; IC2 and C3 form a high-frequency oscillator of about 37MHZ; the low-frequency signal output by C2 modulat...[Details]
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First, rotate the "LEVEL" trigger level knob to make the "TRG LED" indicator light up, indicating that the trigger conditions are met at this moment. Second, press the "SOURCE" trigger source selec...[Details]
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introduction
With the progress of modern science and technology, new and higher requirements are being put forward for the quality of power supply. For example, mobile phone base stations, pre...[Details]
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According to Reuters, Putin attended the 23rd St. Petersburg International Economic Forum and criticized the United States for suppressing Huawei. Taking Huawei as an example, Putin said that regardi...[Details]
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**Serial port configuration of STM32L151C8T6 ////////////////////////////////////////////////////////////////// //Add the following code to support the printf function without selecting use M...[Details]
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0 Introduction
Biosignals have various manifestations, such as physical changes in sound, light, electricity, force, etc., as well as chemical changes in concentration, gas partial pressur...[Details]
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Transient Voltage Suppressor (TVS) is a high-efficiency protection device in the form of a diode. Some documents also refer to it as TVP, AJTVS, SAJTVS, etc. When the two poles of the TVS diode are su...[Details]
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As global energy and environmental issues continue to emerge, the development of new energy vehicles has become an inevitable trend for the world to achieve energy security and environmental protecti...[Details]
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10 years ago, recommending apps to each other was a popular trend. If I saw an interesting or useful app, I would always share it with my friends. After 10 years, sharing no longer exists, a...[Details]
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Display technology can improve our lives, especially automotive displays, which can help us drive better, smarter, and more carefully. Together with many other sensors and cameras, it can be designe...[Details]
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Refer to the serial communication experiment of atomic stm32f series and transplant the program code to the stm23l series. 1. Using the serial port interrupt mode, the serial port generates an inte...[Details]
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When debugging RTC, I found that the reading and writing were incorrect. Reading and writing are library functions that are called, and the year, month, day, hour, minute, and second are operated s...[Details]
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RCC circuits are divided into two types according to different power tubes. One is made of triodes, and the other is made of MOS tubes. The circuits are slightly different, but the principles are not...[Details]
DSP and ARM Processors
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