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LED guardrail lights use fluorescent tubes or LEDs as light sources and continuous guardrails as carriers to form an approximately linear guardrail light strip. This article mainly introduces a gua...[Details]
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In today's society, optoelectronic technology has been widely used, especially in optical fiber communication technology, remote control technology, radar detection technology, automatic contr...[Details]
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You know that freeze-ray gun that Batman villain Mr. Freeze uses to "freeze" his enemies? A University of Virginia professor thinks he may have figured out how to build one in real life. The discov...[Details]
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According to the Shanghai Municipal Health Commission, from 0:00 to 24:00 on March 24, 2022, Shanghai added 29 local confirmed cases of COVID-19 and 1,580 asymptomatic infections. As a major center o...[Details]
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Simple and easy power-good indicator detects mains and over voltage
Summary: Undervoltage/overvoltage (UV/OV) indicators, also called power-good (THIN) indicators, can notify portable device users ...[Details]
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Sometimes, we want to display different states on the front panel, similar to the chess pieces in Go, we need three states: black, white, and no pieces. If we use LEDs to represent them, there can onl...[Details]
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After testing, it was found that the RF front-end mixer was faulty, resulting in no signal detection and self-calibration error. Repair process The damaged components were replaced and the enginee...[Details]
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Objective: Understanding EEPROM-IIC bus (I) 1. Introduction to IIC bus IIC (Inter-Integrated Circuit) bus is a two-wire serial bus developed by PHILIPS, which is used to connect microcontrollers an...[Details]
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Question: It is known that there are four buttons connected to the IO ports 0 to 3 of the P3 port in the microcontroller, and there are four LED lights connected to the IO ports 0 to 3 of P1. Write a...[Details]
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O Introduction
Ultrasonic waves refer to mechanical shock waves with a frequency greater than 20 kHz generated in elastic media. Ultrasonic waves have high frequencies, strong penetration, stro...[Details]
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At the 2021 World 5G Conference, Huawei disclosed that my country has built the world's largest 5G network in just two years of commercial use. In order to make technology accessible to the world, Hu...[Details]
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The 2600A Series Digital SourceMeter is Keithley's new IV source-measure instrument that can be used as a desktop IV characterization tool or as an integral part of a multi-channel IV test system. Fo...[Details]
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The usage of bit is similar to sfr, except that sbit is a bit operation, which is used to assign a specific bit in an sfr to a variable, so that the program can use the variable to clear or set the b...[Details]
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Large signal (above 0.5V) detector, also called envelope detector.
1. Series diode peak envelope detector
The principle circuit of this detector is shown in Figure 5.5-10A. In the cir...[Details]
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Those who work in embedded systems basically know that once the board is basically running, the first thing to be configured is the serial port, which will facilitate the output of debugging inform...[Details]