UPS Knowledge Explanation[size=2][b]1. Types and working principles of UPS[/color][/color][/size][/b][/size][size=2][color=#0000ff][color=black]UPS is a power protection device that contains energy st...
I recently wrote a scanner program in C#, which called an ActiveScan2800M.dll file. However, during the execution, it told me that the following error occurred: the class was not registered and the CO...
I downloaded Altium Designer 14.2.3, which is 4.3G, and the downloaded Altium Designer 14.3.15 Build 35511 is 2.96G, and the downloaded AD 14.3.16 is 1.26G. Why is the installation file smaller with h...
[align=center][color=red][font="][size=16.0pt]Storage has me, memory has you[/size][/font][/color][/align][align=center][color=red][font="][size=16.0pt]Memory Technology 2018 Campus Recruitment[/size]...
I have been debugging ZigBee these days, using Jennic's 5139M4. Now other applications have been debugged, but there is a problem with the AD sampling part. There are 4 AD sampling pins on the 5139, b...
Have you ever wondered which light on your Christmas tree is the brightest during the Christmas holidays? A photodiode can help you determine the brightness of those lights. However, it can still be a...
Do you often have to add brake fluid to your car's brakes? The fact that you need to pump out the brake fluid to make sure there is no gas in the brake fluid line may not be done by the car owner h...[Details]
For a long time, due to the limitation of hardware conditions, the display devices of traditional small handheld devices such as PDA are usually monochrome LCD, and the user interface is very simpl...[Details]
Since the No. 4 blast furnace of Handan Iron and Steel was put into operation in 1993, its external equipment has been seriously aged, and the original PLC control system TDC3000 of the hot blast furn...[Details]
The concept of state machine
State machine is an important concept in software programming. More important than this concept is its flexible application. In a clear and efficient program, ther...[Details]
System Overview
The system consists of a signal preprocessing circuit, a single-chip computer AT89C2051, a systematic LED display module, a serial port data storage circuit and system software...[Details]
1 Introduction
Ultrasound refers to elastic vibration with a frequency higher than the audible frequency limit (i.e., in the frequency band above 20 kHz). The propagation process of this vib...[Details]
Abstract: In order to realize wireless automatic alarm and monitoring of major safety places, based on the basic principle of pyroelectric infrared sensing, a detector for receiving infrared radia...[Details]
introduction
At present, the research on micron and nanotechnology is very active, which has led to the rapid development of microtechnology and micro-mechanical electronic system (MEMS) t...[Details]
One in five car failures are caused by batteries, a problem that will become more serious in the coming years as electric-by-wire, start/stop engine management and hybrid (electric/gas) vehicles be...[Details]
The future energy storage hotspot is not coal or iron ore, but lithium. This lightest metal in nature may be the heaviest resource in the future energy landscape. China launched an ambitious electr...[Details]
summary
This article will briefly analyze the success and shortcomings of high-frequency DC-DC switching power supplies in the process of miniaturization (the second basic goal), and propose m...[Details]
In industry, voltage 0…5 (10) V or current 0 (4)…20 mA is usually used as a method for analog signal transmission, which is also a method often used by programmable controllers. So what are the dif...[Details]
DCDC means DC to DC (conversion of different DC power values). Anything that meets this definition can be called a DCDC converter. Specifically, it means converting the input DC into AC through a s...[Details]
This paper describes the design method of electronic multifunctional watt-hour meter, the key technology of hardware design and the software design process. Taking NEC's μPD78F0338 microcontroller ...[Details]
Preface
DS18B2 is generally used in conjunction with a single-chip microcomputer, and there are few reports on
the interface between
DSP
and DS18B20. Therefore, this article introdu...[Details]
Power technology
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