A few questions. 1: I received the switch information of two sensors from the other end through the serial port, which are DOOROPEN & DOORCLOSE, DOORFREE & DOORBLOCK. The problem is that these informa...
I wrote a program that does not use an operating system. After the image information is stored in the buffer, it can only display a general image. I don't know why? My screen is 320*240 U8 ScreenBitma...
Since some infrared devices purchased by the company only support original infrared, I would like to ask whether the PPC mobile phones of Duopuda Company still support original infrared communication....
The circuit is shown in the figure. The mains power is stepped down by C5, R7, R8, rectified by VD7~VDl0 and stabilized by VD11 to provide the circuit with working voltage. When the electric iron is p...
WildFire FreeRTOS Kernel Implementation and Application Development Practical Guide : https://training.eeworld.com.cn/course/5356The first part is: Teach you to write FreeRTOS kernel from 0 to 1. This...
I want to use 51 to make a timer setting with 5 keys 1 set 2 change 3 number plus 4 number minus 5 RESET Use digital tube to display time first set the timer time to start counting when the set time i...
The rapid development of the Internet has realized high-speed information transmission and resource sharing, greatly facilitating people's lives. Embedded systems are widely used in various electr...[Details]
1. Introduction
RFID (radio frequency identification) is a non-contact automatic identification technology that emerged in the 1990s. It uses the characteristics of radio frequency signal prop...[Details]
In recent years, the market for mobile/portable devices such as smartphones and laptops has continued to grow rapidly. While these products continue to integrate more new features to enhance the ...[Details]
introduction
Solar cells and LED lighting are typical applications of new energy and energy-saving and efficient technologies. Solar LED lighting uses solar cells to convert solar energy...[Details]
In this article, the high-performance DSP developed by TI can be used as an effective confidentiality method if it is applied to PC encryption cards.
As an effective network security solution,...[Details]
1. Introduction
Light control circuit plays a vital role in urban street lamps or corridor lighting. With light control circuit, the lights can be automatically turned on and off according to ...[Details]
Electronic systems are located at different points on the automotive power bus and therefore often need to operate under very stringent power requirements. These include load dump, cold crank, very lo...[Details]
Vertical cavity surface emitting lasers (VCSELs) are gradually replacing traditional edge emitting lasers, especially in low bandwidth and short-distance communication systems where cost factors ar...[Details]
Contact resistance
is the resistance to current flow through a closed pair of contacts. This type of measurement is performed on devices such as connectors,
relays
, and switches. The...[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]
1. With the development of modern industry and the continuous improvement of automation, some medium and large control systems have been greatly facilitated, which not only makes control easier, bu...[Details]
1 Introduction to HART Protocol
HART (Highway Addressable Remote Transducer), an open communication protocol for addressable remote sensor high-speed channels, was launched by Rosemen in the U...[Details]
1. Introduction
Testing the temperature of steel billets before rolling is an important measure to ensure the quality of steel. Traditional manual testing is difficult to ensure product qu...[Details]
The potentiometer is an adjustable electronic component. The main functions of the potentiometer in the circuit are as follows:
1. Used as a voltage divider
A potentiometer is a continuou...[Details]
0 Introduction
High-precision current source can provide high-precision current supply for precision instruments, and is suitable for automatic measurement tasks of various resistors in semico...[Details]
Embedded System
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