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In 485 communication, in order to facilitate testing, a test quantity was added to the front end of the 485 chip, but TTL was used for direct communication. However, in the actual PCB test, if the P5...[Details]
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Abstract: Aiming at the echo problem in communication, an adaptive echo canceller is designed based on the LMS algorithm of adaptive filtering. Based on the use of FPGA chips, on the DSP Builder ...[Details]
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1. Preface
1. Linux kernel version: 3.4.2
2. References
- "Embedded Learning - Driver Development - Lesson 7.1 - NIC Driver Architecture Analysis Driver and CS8900 Process Analysis"
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Electronic ballast
Common circuits are shown in the attached figure. The vulnerable parts are roughly as follows:
1. Fuse FU: Some products use fuses, and some use 1~2Ω resistors. G...[Details]
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The 51 MCU source code is as follows /* A single digital tube displays 0~F in a cycle */ #include reg51.h typedef unsigned char uint8; typedef unsigned int uint16; code uint8 LED_CODE = {0xC0,0xF...[Details]
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1 Introduction In his speech at the closing ceremony of the 26th China Power Grid Dispatching Operation, Deputy General Manager Lu Yanchang of the State Power Corporation pointed out the issues that ...[Details]
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As the cheapest output device, digital tubes are widely used in various automation equipment. The simplest and most common display method is dynamic refresh display, which is called pseudo-dynamic di...[Details]
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In recent years, the TWS market has continued to be hot. With the release of potential user demand, the TWS headset market will further expand. TWS headsets will not only be a mobile phone accessory,...[Details]
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IEEE Spectrum reports that in 2005, the transistor density of large-scale integrated circuits used in data processors will reach 100 million/cm2, the clock frequency will be 1 GHz, and the feature ...[Details]
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On September 20, Zhiji Auto announced that its NOA BETA version with high-precision maps has been launched for public testing, bringing high-speed elevated navigation assistance functions based on th...[Details]
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S_I EQU P1.5 ;Content sends
SCK EQU P1.7 ;Serial CP end
RCK EQU P1.6 ;Output CP end
EN EQU P1.4 ;EN is 138 enable end. High level turns off the display; low level displays
;********...[Details]
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1. Introduction The TV image tracker is a simple and intelligent image tracking device. It can extract and separate moving targets in the field of view field by field in a relatively complex ba...[Details]
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The key to wireless application design is to first select the right wireless connectivity technology based on the application requirements, which determines protocol, interoperability, range, robustn...[Details]
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For battery-powered portable devices, in addition to breaking through the limitations of processing power, the performance of portable system power supplies also needs to be continuously improved. ...[Details]
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With the improvement of domestic flow battery production capacity, the demand for flow battery electrode carbon felt market is also gradually increasing. Carbon felt is very important in the battery s...[Details]
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