I made a non-standard keyboard extended by 8255 to communicate with PC. Now I don't understand how 8255 communicates with PC. How are so many ports on PC allocated to 8255? Thank you....
[i=s]This post was last edited by shidaikeji on 2014-6-27 23:01[/i] [url=https://bbs.eeworld.com.cn/thread-372933-1-1.html]https://bbs.eeworld.com.cn/thread-372933-1-1.html[/url] We have previously ex...
[i=s]This post was last edited by 1nnocet- on 2019-7-23 14:50[/i]《PWM Control of DC Motor Acceleration, Deceleration, Forward and Reverse Rotation》
Since I am quite busy recently, I will give a brief ...
I would like to ask if anyone has developed a complete set of 24G radar. Please contact QQ[url=mailto:13380331958@163.com]3[/url]82755418. Thank you!...
1. Equipment Overview
Shell-and-tube heat exchangers are a common heat exchange device used in chemical evaporation and heating equipment. Currently, the tubesheets of shell-and-tube heat exch...[Details]
1. Introduction
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Robotics
has become
LiDAR
's "second growth curve."
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introduction
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Since its invention in the mid-1940s, the microwave oven has evolved from a humble beginning to commercial use, entering homes in the 1960s and rapidly gaining popularity. Its basic functionality a...[Details]
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Electric vehicles' 12V batteries don't rely on a generator to power them. Only gasoline-powered vehicles rely on the engine to drive a generator to generate electricity while driving, which is used...[Details]
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Learned the following information.
Customer product: industrial computer motherboard
Glue application area: CPU/BGA filling
Glue color requirements: black or t...[Details]
According to Nikkei, Japan has performed poorly in responding to China's power semiconductor challenges.
There are five major companies in Japan's power chip market: Mitsubishi Electric,...[Details]
On August 21st, BYD announced the launch of its next-generation "Little White Pile" product, the "Lingchong"
charging
pile
, which is now available for general sale. This charging pile feat...[Details]
China, August 21, 2025 – STMicroelectronics (NYSE: STM), a world-leading semiconductor company serving a wide range of electronics applications, has published its IFRS 2025 semi-annual financial re...[Details]
The difference between a series inverter and a parallel inverter is that they use different oscillation circuits. A series inverter connects L, R, and C in series, while a parallel inverter connect...[Details]
Embedded System
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