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System functions Use 74LS165 to expand the serial port input of C8051F to parallel port input. hardware design Schematic diagram of the control circuit of the serial input expansion chip 74LS165 ...[Details]
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Because the output of the microcontroller is open-drain output, just like the collector of a transistor, it cannot output a high level without a pull-up resistor. The pull-down resistor pulls the lev...[Details]
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What is a dual speed motor?
The dual-speed motor is an asynchronous motor with pole-changing speed regulation. It changes the number of pole pairs of the stator rotating magnetic fiel...[Details]
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//Infrared decoding, the experimental board tested normal, the 8-bit digital tube displays the remote control code (user code, user inverse code, the 3-digit digital tube on the right displays the PW...[Details]
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With bad news coming one after another, the situation will only become more cruel for Huawei. But these are just some stumbling blocks on the road to rise. Technological innovation will surely be ...[Details]
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On January 25, Fang Xiaoqiu, a shareholder of Moso Power Technology Co., Ltd. (stock code: 002660), pledged 410,000 shares to Guohai Securities Co., Ltd. for additional pledge.
The pledged...[Details]
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According to news on November 20, Samsung plans to expand its semiconductor chip factory in Tyler, Texas, USA. The South Korean company recently signed a contract with a fabless semiconductor chip co...[Details]
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In the last issue, we briefly learned about the main components of vehicle-mounted sensors and a brief introduction to vehicle-mounted laser radar. Many friends said that they can distinguish the maj...[Details]
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1) fPCLK is not the CPU frequency, but the frequency of the peripheral bus.
2) The fastest SPI clock of STM32 is 18MHz, which is determined when the chip is designed.
3) STM32's SPI1 is on APB2,...[Details]
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According to the requirements of today's mobile terminal devices for multi-function, low power consumption and easy portability, this paper proposes a solution for embedded multimedia entertainment...[Details]
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ARM Technology (China) Co., Ltd. (hereinafter referred to as "ARM Technology") held an online general meeting of employees in multiple offices. The company's new co-CEOs Liu Renchen and Chen Xun made...[Details]
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The International Energy Network learned that recently, Arlo Energy stated in an investor survey that since the second half of 2023, companies in the same industry have always had a large inventory...[Details]
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How to use power supply and 4-layer base to make small LED bulbs appear one after another
This is the data estimated by Sharp based on various data. Since the second decimal place ...[Details]
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With the appearance of Vivo S15 Pro announced, OPPO Reno 8 Pro can no longer hold back and has fully announced the appearance of the new phone. The price will be officially announced on May 23. It ...[Details]
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The intelligent soft start cabinet is a device used for starting the motor. It controls the starting current of the motor to achieve smooth starting of the motor, reduce the current shock during st...[Details]
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