[code]function findR(val,err,sel,area) %Find matching resistor %val=R2/R1 %err deviation %sel resistor selection, use 1% resistor when 1, use 5% resistor when 5 %area order of magnitude range, search ...
For many engineers, using various tools become everyday job, sometimes we even miss in those tools. In the article, the author went through one experience of solving routing congestion in the design t...
I put my 6410 into hibernation and then woke it up. For less than 1 second, the screen showed the image before it went into hibernation. It seems that the video memory was not refreshed and the backli...
Using vivi, it shows booting the kernel but nothing happens: The details are as follows vivi> boot Copy linux kernel from 0x00030000 to 0x30008000, size = 0x001d0000 ... done zImage magic = 0x016f2818...
Since the clocks of the transmitting and receiving ends are from different sources, clock synchronization, i.e. code synchronization, is required. I used an early-late gate to achieve code synchroniza...
In the simple oscilloscope experiment in the previous article, when observing the waveform of the AC linear low-voltage power supply, what I saw was a regular undulating approximate straight line, ins...
In early 2002, I started to write a working program for an IC card prepaid electricity meter. The meter used Philips' 8-bit 51-expanded single-chip microcomputer
87LPC764
, and wa...[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]
As a wireless broadband metropolitan area network standard, WiMAX technology has greater advantages than previous 3.5GHz MMDS products in terms of non-line-of-sight transmission and spectrum utiliz...[Details]
China's new energy vehicles are in a transition period from research and development to real industrial development. In 2012, with the intensive launch of new energy vehicle policy planning, the de...[Details]
The Mobile Industry Processor Interface (MIPI) Alliance is an organization responsible for promoting the standardization of software and hardware in mobile devices. It has released the D-PHY specif...[Details]
introduction
The emergence of high-performance, low-power embedded CPUs and high-reliability network operating systems has made it possible to implement applications with large amounts of comp...[Details]
1 Introduction
Ultrasonic waves have strong directivity, slow energy consumption, and can propagate over long distances in a medium, so they are used for distance measurement. Ultrasonic detec...[Details]
1. System Structure
This system is a simulation system of indoor air-conditioning temperature/humidity control system. The data acquisition and control center collects temperature/humidity...[Details]
1 Introduction
Water resources are the basic conditions for human survival and the lifeline of economic development. The reality shows that due to the global shortage of water resources and th...[Details]
On the afternoon of July 10, Beijing time, Taiwan's largest chip designer MediaTek expects its smartphone chip shipments to grow by double digits in the third quarter of this year, and the company is ...[Details]
The automotive lighting and signal control system is responsible for controlling the vehicle's lighting, signal lights, electric horns, reversing and brake buzzers. Traditional automotive lighting...[Details]
The typical fault troubleshooting listed below is for reference of maintenance personnel.
When the computer is turned on, the indicator light is off and there is no screen display
Mainte...[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]
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