I have been struggling with the REN, OUT, and DIR issues of the IO port for some time. Finally, I think this diagram summarizes it in detail. Here is a summary of the usage of PxDIRx, PxRENx, and PxOU...
Although it is written in C#, experts who know Modbus should be able to understand it! ! This is a program that connects two serial ports to communicate with each other (for example, use the serial po...
Since I started learning electronics, the Internet has always been an important way to acquire knowledge, and forums are one of the key points. There are the footprints and experiences of predecessors...
I have been studying infrared temperature sensors recently and have some doubts. TI's TMP006 uses MEMS technology to reduce the area and volume. Its competing product is the one with a filter (as show...
1. Overview
Will passive devices
produce nonlinear intermodulation distortion? The answer is yes! Although there is no systematic theoretical analysis, it has been found in engineerin...[Details]
At present, the traffic congestion in cities is quite serious. According to relevant news reports: In China, the traffic congestion has expanded from megacities such as Beijing, Shanghai, and Guang...[Details]
0 Introduction
With the development of society, people pay more and more attention to security work. Monitoring products have been used in various fields instead of being used only in importan...[Details]
1. Background:
The instrument system parameter detection and control of the chemical production workshop of Tangshan Coal Gas Coking Plant are all analog instruments, some of which are eve...[Details]
The emergence and development of street lamps are inseparable from the prosperity and progress of cities, which makes street lamps useful. Conversely, street lamps also make the night of the city n...[Details]
Dual Tone MultiFrequency (DTMF) signaling is gradually being used in push-button telephones around the world. It quickly replaced the dial pulse signaling used in traditional rotary phones because ...[Details]
In the TV monitoring system, in order to complete the collection of information from various information points (video, audio, alarm signal) and the control of various front-end devices (PTZ, lens,...[Details]
1 Introduction
With the rapid development of my country's economy, the country has introduced a series of policies such as preferential policies, subsidy policies, and old-for-new policies, wh...[Details]
Voltage hysteresis is a characteristic of lithium-ion battery and the basis of its existence. The principle is as follows: the thionyl chloride electrolyte of the battery is a strong oxidizing chem...[Details]
According to a survey by the International Energy Agency, Asia and Australia used 1.65 trillion liters of oil for energy in 2004. The survey also showed that since 1990, the demand for oil has been...[Details]
Communication protocol: The first byte, MSB is 1, which is the first byte mark, the second byte, MSB is 0, which is the non-first byte mark, and so on... The last byte is the XOR checksum of the la...[Details]
The treatment capacity of a sewage treatment plant in Shanghai is 10,000 m³/day, and the number of monitoring points is not large. The selection of S7-300 PLC plus Beijing Dingshi DS300B distributed I...[Details]
1. Fieldbus Technology
The blast furnace gas washing system is to purify the gas recovered from the blast furnace through the washing tower and then send it to the user. The original conve...[Details]
Automotive electronics design must provide more competitive cost advantages under the conditions of multiple design requirements such as performance, reliability, and time to market. This article w...[Details]
In single-chip microcomputer application systems, it is often necessary to communicate with microcomputers through RS-232 serial ports. Among various operating systems, Microsoft's Windows is more ...[Details]
Microcontroller MCU
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