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In order to further promote the development of the domestic car-grade chip industry, the Beijing Municipal Science and Technology Commission and the Zhongguancun Management Committee continue to focu...[Details]
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#include
#define uint unsigned int
#define uchar unsigned char
sbit IR=P3^2; //Infrared interface flag
sbit RS = P1^0;
sbit RW = P1^1;
sbit E = P1^2;
sbit beep = P1^7;
uint hour,minute,second...[Details]
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Under the new technology wave of 5G, ultra-high definition and artificial intelligence, Gokewei and broadcasting and television operators grow together, helping broadcasting and television operators ...[Details]
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According to Nikkei Chinese website, Samsung Electro-Mechanics, an affiliate of South Korea's Samsung Electronics, will invest US$850 million to establish a cutting-edge substrate mass production lin...[Details]
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On November 3, ZTE officially launched the new 5G phone ZTE Blade 20 5G priced at 1,000 yuan this year. It is equipped with Dimensity 720, 6GB+128GB and priced at 1,499 yuan. It has been sold simulta...[Details]
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0 Introduction
Traditional induction energy meters are limited by their structure and principle, and usually have shortcomings such as small measurement range, poor stability, and low accuracy...[Details]
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Aiming at the problem that the electrolytic capacitor in the existing LED driving circuit limits the life, a design method for LED driving circuit without electrolytic capacitor is proposed. This met...[Details]
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This paper introduces a fully digital UPS design method based on Motorala single chip microcomputer MR16. A prototype is made according to the design idea and good experimental results are obtained...[Details]
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Google is working on a new file-sharing tool called Fast Share that's not only an alternative to Android Beam but also a competitor to Apple's AirDrop. Screenshots show that the Fast Share file-sha...[Details]
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The traditional constant current control of LED lamps is through AC/DC, and then through the DC/DC converter for constant current control. In the AC/DC converter, a filter capacitor is usually used a...[Details]
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I. Overview In recent years, various forms of ultrasonic flowmeters based on different principles and suitable for different occasions have been widely used. At the same time, a series of questions h...[Details]
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On the afternoon of June 15, China Energy Engineering Corporation (hereinafter referred to as "China Energy Engineering") and Contemporary Amperex Technology Co., Ltd. (hereinafter referred to ...[Details]
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1. Experimental tasks (1) When the computer is turned on, the time displayed is 12:00:00 and the timing starts. (2) P0.0/AD0 controls the adjustment of “seconds”, and each press adds 1 second. (3) P0...[Details]
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As a tool for precision measurement, grating has been widely used in the fields of precision instruments, coordinate measurement, precise positioning, high-precision precision machining and other fie...[Details]
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3. Design of Switching Transformer
The area product (AP) method is used for design. For the push-pull inverter working switching power supply, the primary supply voltage UI=24V, the secondary sid...[Details]
Analogue and Mixed Signal
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