I use CD4046 and CD4040 (256 frequency division) to phase lock the grid frequency of 50Hz, but I can't adjust it. I don't know the following frequencies:
f0: center frequency = 50Hz*256=12.8kHz? ? 2fc...
Hello everyone, I would like to ask which function can be used to obtain the coordinate position of the mouse? It would be best if you can give a concise example. I hope you can give me some advice....
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[i=s] This post was last edited by Wu Jianying on 2014-6-18 09:57 [/i] [align=center][b]Wu Jianying's Digital Oscilloscope User's Guide (Take DS-1000 Series as an Example) [/b][/align] [align=left][fo...
I seem to have read a lot of books and searched on Google for a long time about this function, but there is almost no usage of this function. I just know: "r_write() writes data to the file descriptor...
The driver of wince sd is controlled by the SD host controller, one port is connected to the SD card (the source code is already available), and the other port is connected to movinand. How to write t...
The structure of an LCD TV primarily consists of the LCD display module, power module, driver module (primarily including the main driver board and tuner board), and keypad module. LCD display modu...[Details]
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New version helps developers build secure and trustworthy embedded systems
Shanghai, China—August 21, 2025—
QNX, a division of BlackBerry Ltd., today announced the release of QNX...[Details]
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The working principle of a frequency converter is to process input fixed-frequency AC power through circuits such as rectification, filtering, and inversion, and then output AC power with variable ...[Details]
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1 Introduction
Driven by the rapid development of information technology, the pace of television digitization has accelerated. The transition from analog to digital television has significant...[Details]
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Telepresence offers the most natural video conferencing experience. You can hold a meeting simply by walking into a conference room or sitting at your desk, making it feel like y...[Details]
Analog electronics
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