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S 文章(这部分加style只是为了看效果,基本上表现都受编辑器设置控制)RC charging calculation method
Reprinted from: http://hi.baidu.com/cumtsun/blog/item/b8ee5f16561cae4e20a4e93c.htmlExample 1 : As shown in the figure, ...
Whether it is high or low, the relay will work. When it is high, the voltage difference between the 3rd and 4th pins of the optocoupler is 10V, and the relay is 24V. Shouldn't it be 0 when it is high?...
Hello everyone, I have a few questions to ask you. I am studying the Bluetooth device of embedded system recently. The CPU used is s3c2443, and the OS is WinCE Platform Builder 5.0. I want to build a ...
Now I have a large constant array const int testdata[1000]. In order to save memory, I want to put it in the code segment. How do I declare it? In the past, in the microcontroller, the bytes were simp...
The problem of HPS accessing the i/o port of FPGA through the HPS-to-FPGA bridge. It is not a lightweight bridge. Has anyone done it before? I have been working on it for two days, but it doesn't work...
Dear heroes, the clock of the crystal oscillator is main_clk. After dividing the clock, we get the AD clock AD_clk. However, in the actual circuit diagram, I connected AD_clk to the pin corresponding ...
Today, with the increasing integration of functions, mobile phones can also be used as portable media players (PMP), digital cameras, handheld computers (PDAs), and even global positioning systems ...[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]
Remote keyless entry (RKE) systems have become popular with users, with more than 80% of new cars in North America and more than 70% in Europe equipped with RKE systems. In addition to the obvious ...[Details]
introduction
Throughout the history of automotive lighting, power has always played an important role. Initially, cars only needed headlights to see the road in the dark. Later, other light so...[Details]
Aromatic gases are widely present in food, medicine, cosmetics and various daily chemical products, such as snacks, liquor, spices, Chinese herbal medicines, plasters, perfumes, soaps, shampoos, et...[Details]
I've been studying dot matrix recently. It looks simple, but it takes a while to master it completely! The 8*8 dot matrix hardware circuit I'm making now is like this. The row is driven by 74HC138 + t...[Details]
Abstract: Aiming at the needs of coal-rock acoustic emission signal monitoring system, a data acquisition circuit with 24-bit resolution and 16-channel synchronous data acquisition function is desi...[Details]
Temperature compensated quartz crystal oscillator (TCXO) is widely used as a high-precision frequency source in communication systems, radar navigation systems, precision measurement and control sy...[Details]
1 Embedded Systems
Embedded System refers to a collection of computer hardware and software with specific functions or purposes, which is divided into embedded software system and embe...[Details]
Measurement compatibility
It is very important to ensure the compatibility between the pressure sensor and its actual application. Before making a pressure sensor selection, the fo...[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]
Stepper motors have been widely used in automatic or semi-automatic equipment such as CNC machine tools, medical equipment, and instruments. The usual way to control stepper motors with computers i...[Details]
Stepper motors, also called steppers, use the principles of electromagnetism to convert electrical energy into mechanical energy and have been used since the 1920s. With the increasing popularity o...[Details]
1 Causes of problems with electric vehicle batteries
1.1 Caused by the battery itself
Why do we say that? In the previous issue, we learned about the working princi...[Details]
Lithium iron phosphate batteries are used as lithium-ion secondary batteries. Their main application is now in power batteries, which have great advantages over NI-H and Ni-Cd batteries.
Lithi...[Details]
Analog electronics
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