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There are two types of controllers used in air conditioning automatic control
Both programmable controller PLC and direct digital controller DDC are composed of CPU module, I/O module, display...[Details]
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Apple M1 and Windows 11 are taking turns to stir up the PC market. The launch of Apple’s M1 chip last year and the release of Windows 11 this year have been stirring up the already sluggish PC mar...[Details]
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#include
unsigned char code table ={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,}; // Display value table 0-9
void main (void)
{
while(1) //mai...[Details]
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Contents The invention relates to an ultrasonic flow measuring device, comprising a measuring tube with a straight measuring tube axis, a transmitter for transmitting an acoustic signal on a first si...[Details]
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Keysight Technologies (NYSE: KEYS) recently announced that Keysight and Avis will jointly build a millimeter-wave radar laboratory and hold a signing ceremony. The two will work together to help adva...[Details]
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4. Countdown program with preset starting time
In the article "PIC Microcontroller C Language Program (5)" in the 2nd issue of 2010, we introduced the hardware circuit of the clock with preset ...[Details]
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74hc595.h： #ifndef __74hc595_H__ #define __74hc595_H__ /****************************************Bit definition************************************/ sbit DATA_IN = P1^0; //Serial data input sbit ST_...[Details]
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Design and application of energy consumption monitoring system for large public buildings based on Acrel-5000
In January 2008, the Beijing Municipal Construction Committee and the Municipa...[Details]
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introduction
Recently, the market for LCD (liquid crystal display) TVs (hereinafter referred to as LED TVs) with LED (light emitting diode) backlight units has begun to grow significantly, and...[Details]
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In order to accurately grasp the strategic direction of the global industrial Internet, timely track the innovation dynamics and characteristic trends of the industrial Internet, and prospectively ju...[Details]
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0 Introduction
Smart home system is a diversified network system formed to adapt to modern family life. It is the product of the combination of modern 3C technology (computer technology, commun...[Details]
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According to Russia's Izvestia newspaper, as local people's concerns about escalating sanctions gradually increased, they rushed to buy mobile phones, computers and other electronic products, causing...[Details]
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Introduction: Generally, the thing that DIY friends are most afraid of is making speakers. The reason is that it is not easy to choose speakers with good performance and they are not easy to buy. ...[Details]
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1. Circuit Online Testing Technology
1. Principle of online testing: The basic principle of online testing is that the tester provides input stimulus to the chip under test on the printed circuit b...[Details]
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Hysteresis PWM current control is a relatively traditional PWM current control method , which has the advantages of good stability, fast response speed, and controllable error. Its system structure i...[Details]
Power technology
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