[align=center][size=5][font=宋体]Recommendation of Classic Materials on Software Testing (Twenty-four)[/font][font=Times New Roman]--[/font][/size][font=Times New Roman][size=5]Zheng Wenqiang Test Manag...
location:Beijing 20w/yr luffy.gu@e4u.cn Job Title Technical Project Manager (Beijing) Roles and Responsibilities 1. Project manager of international desktop products (Think Center), responsible for th...
[font=微软雅黑][size=3][color=#333333]After returning from the National Day holiday, Beijing has been shrouded in smog. Thinking about the weather in my hometown during the holiday really makes me miss it...
I was lucky to get this PELCO dome camera! A friend sent it to me for repair. It was heavy and substantial when I first got it. It really looked like an American Hummer! It turned out that the dome ca...
[align=left][font=楷体,楷体_GB2312]In terms of principle, aluminum batteries are actually very old-fashioned, just like carbon-zinc batteries. However, without graphene, the power of aluminum cannot be fu...
When using the Hezongda development board, I checked the execution efficiency of C language and found that it was very low.Take the timer interrupt as an example (Hezongda development board sample pro...
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]
This paper designs a dot matrix LED text display screen that is easy to update, expandable, and low-cost. The way to reduce costs is
① Use the Bluetooth data transmission function of mobile ph...[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]
1 Introduction
Building Automation System (BAS) is a distributed monitoring system (DCS) designed according to distributed information and control theory. It is the result of the mutual de...[Details]
1 Introduction
With the development of control, computer, communication, network technology, etc., a new control technology, namely fieldbus, has emerged in the field of industrial control...[Details]
PV inverter manufacturer SMA has launched its first DC arc fault circuit interrupter (AFCI) PV inverter and has received UL certification.
The new SunnyBoy AFCI inverter models include 3000-US...[Details]
Problems such as the depletion of natural resources, air pollution, traffic congestion, and rising fossil fuel prices have forced societies and individuals to seek alternative means of transportati...[Details]
Motors, especially those with brushes, generate a lot of noise. This noise must be dealt with if the appliance is to meet the requirements of EMC standards. The means to solve EMC are nothing more ...[Details]
Abstract: With the development and construction of BeiDou II system, China will shift from the situation dominated by GPS to the situation dominated by BeiDou II global navigation system independen...[Details]
Spatial Division Multiplexing (SDM) MIMO processing can significantly improve spectrum efficiency and thus greatly increase the capacity of wireless communication systems. Spatial Division Multip...[Details]
LED light sources have many environmental advantages, but early products still have certain technical bottlenecks in heat dissipation and high brightness design that cannot be broken through....[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]
LED is the abbreviation of the English word. Its main meanings are: LED = Light Emitting Diode, a solid-state semiconductor device that can convert electrical energy into visible light. It can dire...[Details]
In recent years, with the increasing maturity of LED technology, LED light sources have been increasingly widely used due to their advantages of using low-voltage power supply, low energy consumpti...[Details]
0 Introduction
In the design and construction of communication systems,
communication power supply
is called the heart of the communication system. The power supply system will dire...[Details]
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