Please recommend a PCI bus or USB interface orthogonal coding signal acquisition card or module. I am not very knowledgeable and don’t quite understand it!...
Has anyone played with RS232? Isn't it just the usual 3 wires, DB9, 2, 3, 5? Now my question is, I have two RS232 data lines, and I want to output them through one RS232. Has anyone done the relevant ...
The clock written with 1302 is back to the initial interface after power failure. The battery does not work. Which great god can teach me? Thank you very much...
Abstract: Based on the analysis of battlefield smoke medium characteristics, the attenuation and phase shift of microwave and millimeter waves in battlefield smoke are calculated, and the attenuation ...
I want to build a system myself, so I disassembled my electronic dictionary today and found two chips sealed by glue that looks like black plaster, one of which is the CPU. What is that black plaster?...
An engineer in Shenzhen Futian Huaqiangbei who specializes in screen development and production needs to use an oscilloscope to measure a series of pulse signals when the Apple tablet computer iPad po...
Emergency hand-held lamps powered by 6V maintenance-free batteries are widely used in rural areas. The charger used is a transformer step-down and single diode half-wave rectifier, and the charging...[Details]
1 Introduction
With the acceleration of the pace of urban modernization, society has higher requirements for urban road lighting and urban lighting projects. The state has clearly required tha...[Details]
Instrument stepper motor
The stepper motor is an open-loop control element that converts electrical pulse signals into angular displacement or linear displacement. In the case of non...[Details]
1. Introduction to CIF Board
Fieldbus integration based on PC system
Whether it is a master or a slave, fieldbus has won unanimous praise in the field of PC-based automation. For more...[Details]
This week, Microsoft held its 2012 Microsoft Worldwide Partner Conference (WPC) in Toronto, Canada. At the conference, Microsoft showed its new products and services to partners around the world. A...[Details]
Portable power applications are broad and varied. Products range from wireless sensor nodes with average power consumption of only a few microwatts to in-vehicle medical or data acquisition systems...[Details]
introduction
When it comes to the production of mobile phone lithium-ion batteries, the first thing that comes to mind is Japan's industrialized mechanical assembly line, NOKIO, MOTOLROLA's st...[Details]
Infrared remote control is widely used in home appliances, but the remote controls produced are not compatible with each other. The universal remote controls commonly seen on the market can only co...[Details]
Microcontrollers are something that many people want to learn about and are concerned about. In most websites, the hardware requirements are generally as follows:
1. You need a computer, prefer...[Details]
(1) Open circuit voltage of the battery
(2) Internal resistance of the battery
(3) Battery operating voltage
(4) Charging voltage
Charging voltage refers to the voltage applied ...[Details]
After the development of the single-chip microcomputer application system is completed, the system often freezes at the work site due to noise interference, electromagnetic interference, overvoltag...[Details]
Power quality refers to the quality of AC power supplied to the user end through the public power grid. In an ideal state, the public power grid should supply power to users at a constant frequency...[Details]
introduction
In modern industrial control and some intelligent instruments, more and more places need to use dot matrix graphic displays to display Chinese characters. The usual way to display...[Details]
Engineers usually use multiple groups of cheap small-capacity batteries in parallel to achieve the larger battery capacity required by UPS. If multiple groups of batteries with poor performance uni...[Details]
LED lamp beads are voltage-sensitive devices and capacitive loads. In actual work, the current accuracy is required to be high, which is one of the main issues affecting the luminous efficiency and...[Details]
Embedded System
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