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For energy-saving reasons, the industry requires that the brightness of LEDs be adjusted. Using PWM (pulse width modulation) is an effective dimming method. However, with traditional PWM
chi...[Details]
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This paper introduces the design of a VRAM color LCD display module based on AVR single-chip microcomputer and hardware Chinese character library. The display principle of color LCD, hardware inter...[Details]
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introduction
With the development of deep submicron technology, the capacity and density of FPGAs continue to increase. With its powerful parallel multiplication and addition (MAC) capabil...[Details]
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1 Introduction
Pulse width modulation technology controls the on and off of switching elements through certain rules to obtain a set of rectangular pulse waveforms with equal amplitude but u...[Details]
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As we all know, Apple previously launched a new policy that allows scanning CSAM (child sexual abuse photos) content stored in iCloud Photo Library without user permission. This immediately ca...[Details]
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1 Circuit Design For wireless charging circuit, there are three main circuits: oscillation circuit, amplifier circuit and wireless receiving circuit. Here we mainly discuss the wireless charging ...[Details]
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The microcontroller source program is as follows: #include reg52.h //STC89C52 header file #define uchar unsigned char #define uint unsigned int unsigned int time=0; unsigned int timer=0; unsi...[Details]
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Today, Xiaomi officially announced that Xiaomi 9 Pro 5G is equipped with triple fast charging, ending battery anxiety. Xiaomi's official Weibo account said that in the 5G era, it is not just about ...[Details]
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When sitting in the car, you don’t need to control the steering wheel or touch the dashboard. Through gesture recognition, heart rate recognition, face recognition and other technologies, a word, a l...[Details]
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1 Introduction With the rapid development of mobile communications, the development of low-frequency spectrum resources has become very mature. The remaining low-frequency spectrum resources can no l...[Details]
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1 Introduction
The so-called embedded system is a system that integrates application programs, operating systems and computer hardware. In short, it is the integration of hardware and software...[Details]
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Abstract: Inverter
power
uses advanced power
electronic
devices and high-frequency inverter technology, which reduces the materials of traditional power-frequency rectifier powe...[Details]
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On February 1st, not long ago, Samsung pushed the One UI 3.0 system update based on Android 11 to Galaxy Z Fold2 users in overseas regions. Recently, Samsung's Galaxy Z Fold2 in China has fina...[Details]
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In October 2019, the reform of the coal-fired power price formation mechanism kicked off. The National Development and Reform Commission issued a document proposing that the coal-fired power grid-c...[Details]
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This paper introduces a method of realizing a programmable amplifier using the D/A converter MAX551. This method has been successfully applied to the amplifier of an X-ray fluorescence spectrometer...[Details]