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51 MCU parallel GPIO, divided into
Single quasi-bidirectional port
Multi-function multiplexed quasi-bidirectional port
Address bus output quasi-bidirectional port
...[Details]
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In the IC card public telephone system, online public telephones have gradually gained people's favor due to their high confidentiality and strong scalability. This public telephone system is place...[Details]
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I am using the Keil uVision5 version After writing the code, compile it first, and debug it only if there is no error After that, the following toolbar will pop up. The first reset is a reset, wh...[Details]
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Today, the 2020 Tianyi Smart Ecosystem Expo opened grandly in Guangzhou. With the theme of "Smart Enjoyment in the Cloud", this expo aims to further promote the new foundation of 5G cloud network int...[Details]
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The two microcontrollers AT89C51 and AT89S51 are very close in name. What is the difference between them? This article introduces the differences between AT89C51 and AT89S51 in detail. What is the ...[Details]
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According to foreign media reports, Skoda is jointly developing a robot with the Technical University of Prague and the Technical University of Munich that can act like a guard at intersections. The ...[Details]
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Pay attention to the detection interference between different sensors.
Generally speaking, each sensor corresponds to a specific detection gas, but no gas detector can be absolutely effective. Theref...[Details]
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Temperature and Thermocouple Overview
Temperature is a measure of the average kinetic energy of particles in a sample of an object, and its standard unit is "degrees". Temperature can be...[Details]
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Original equipment manufacturers (OEMs) saw their first growth in the PC market in nearly a decade last year, and they expect this positive trend to continue into 2021. According to sources, ODM Pe...[Details]
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Huaqiangbei's efficiency and speed make Apple feel helpless. The launch of iPhone 12 has brought great business opportunities here. It is reported that before the iPhone 12 was launched, Huaqiangbe...[Details]
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This program uses the 89S51 output signal to drive a stepper motor/*
Target:89S51
Program description: This program uses the 89S51 output signal to drive a stepper motor*/
/**********************...[Details]
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On September 11, the first 100MWh-level long-term high-efficiency ultra-high temperature fluidized industrial thermal energy storage project promotion meeting was held in Dalu Industrial Park, Jungar ...[Details]
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1 Introduction As a new type of light source in the 21st century, semiconductor lighting has the advantages of energy saving, environmental protection, long life and easy maintenance. It is a gen...[Details]
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This Design Idea came about because I couldn't get those new ICs for sensing current. I needed a
discrete circuit
that was easy to build
but still had the same accuracy as the new ICs. This...[Details]
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The single-to-double power supply conversion circuit principle provided by Electronics Enthusiasts . The figure shows the calculation of the output voltage ratio and precautions. Resistors and other ...[Details]