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...
Assume that data is read from 8-bit AD (if it is a higher-bit AD, the data type can be defined as int), the subroutine is get_ad();
1. Limited secondary filtering
/* A value can be adjust...[Details]
introduction
Since the beginning of the 21st century, the world of information has changed rapidly. Maybe a high-tech product will be released today and a better similar product will be releas...[Details]
Floating-point digital signal processing has become a constant requirement for precision technology, often in applications requiring high accuracy in areas such as aviation, industrial machinery, a...[Details]
1 Introduction
Solar street lights are mainly composed of four parts: solar photovoltaic cell components, batteries, charge and discharge controllers, and lighting fixtures. The bo...[Details]
Battery life is critical for portable applications. For applications such as smoke detectors, security devices, and thermostats, factory-installed batteries need to last for more than 10 years. The...[Details]
1 Introduction
Intelligent control instruments are one of the most commonly used controllers in industrial control. They are mainly aimed at a specific parameter (such as pressure, tempera...[Details]
In recent years, with the rapid development of the information industry, dot matrix LED display screens have been widely used in various advertising and information display systems such as the fina...[Details]
Overview
In spectral measurement, photomultiplier tubes (PMT) and charge-coupled devices (CCD) are often used as photoelectric converters. PMT is used in slow-changing, high-precision spectral...[Details]
Today, the value of electronic components in cars accounts for 15-20% of the total vehicle. In the future, this proportion may be as high as 30-40% as more safety electronics, fuel consumption and ...[Details]
Motors are important products that convert electrical energy into mechanical energy to achieve automation, and they are widely used in industrial control, medical electronics, white a...[Details]
With the widespread application of new services and technologies in the communications industry, the scale and capacity of operators' network construction are getting larger and larger, and the ris...[Details]
0 Introduction
Ultrasonic waves
are mechanical waves with a frequency of more than 20KHz, and the propagation speed in the air is about 340 m/s (at 20°C). Ultrasonic waves can be gene...[Details]
The DisplayPort interface standard is approved by the Video Electronics Standards Association (VESA) to provide an open, scalable standard for the entire industry. The development of DisplayPort ca...[Details]
With the continuous advancement of various technologies in the field of measurement and control, the baseband subsystem of general measurement and control equipment has entered the fourth generation o...[Details]
Abstract: Based on the ZigBee parking lot SMS car search system, the location of the vehicle in the parking lot is sent to the owner through SMS, which is convenient for the owner to quickly find ...[Details]
Embedded System
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