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Today, the iOS version of WeChat was updated to version 8.0.8, which mainly added new features such as folding and pinning chats, customizing call ringtones, message alert tones, and following group ...[Details]
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I helped my classmates design the circuit diagram and PCB board. The requirements included a camera ov7670 for video collection, a v1s003 for sound collection and playback, and a color screen interfac...[Details]
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Screen analyst Ross Young said that the two high-end iPhone 13 Pro models that will be launched in 2021 are expected to use LTPO display technology to achieve a refresh rate of 120Hz. Young reitera...[Details]
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Announcement from the Ministry of Industry and Information Technology of the People's Republic of China
No. 53, 2020
In accordance with the requirements of the "Standardized Condition...[Details]
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1. Introduction to O-rings An annular cover consisting of one or more parts is fixed on a bearing ring or washer and contacts or forms a narrow labyrinth gap with another ring or washer. Its main fun...[Details]
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1. SPI interface of AVR microcontroller
SPI (Serial Peripheral Interface) bus system is a synchronous serial peripheral interface that allows MCU to communicate and exchange data with various...[Details]
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2011 is a year of rapid development of the LED lighting industry, and the strong promotion of governments around the world has led to its vigorous development. Recently, the bizarre and sharp price...[Details]
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introduction
The lighting system that performs dimming control based on the DMX512 control protocol is called a digital lighting system. At present, various stage lighting equipment including ...[Details]
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Preface The spectrum analyzer, also known as the "RF multimeter", is a widely used basic RF and microwave measuring instrument. It is often used to measure harmonics and spurious measurements of am...[Details]
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Sony is about to launch its next-generation game console, and the head of the company's gaming division said Sony has seen "very considerable" consumer demand for the new PlayStation 5 through pre-or...[Details]
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CCOM uses bridge technology to develop a series of bridges, which
can flexibly realize Internet access and
Ethernet
interconnection based on the existing
TDM
network
, and fully tap the ...[Details]
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We need to be humble enough about the future—we know almost nothing. At the policy and planning level, more explicit consideration of uncertainty and how to respond “robustly” should replace the so...[Details]
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I transplanted Lighttpd+PHP+SQLite3 myself. Since I forgot how to transplant PHP, I copied someone else's to avoid forgetting it when I transplant it later.
Original author:
hwr112100
URL: http:...[Details]
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Original address: 51 single chip matrix keyboard PROTEUS simulation demonstration (picture, program) Author: awesome haha
The procedure is as follows:
#include AT89x52.h
#define uchar unsi...[Details]
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Abstract: This article uses BYD's patents to understand electric vehicles, on-board chargers and their overcurrent protection circuits. The on-board charger includes an AC/DC converter and a DC/DC ...[Details]
Analog electronics
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