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No.1 Key classification and input principle According to the structural principle, the keys are divided into two categories: one is the contact switch key, such as mechanical switch, conductive rub...[Details]
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LED
has the characteristics of energy saving, which makes the application of LED in lighting develop rapidly. At present, in addition to improving the visibility of LED in public facilitie...[Details]
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1. Buzzer Introduction A buzzer is an electronic sounder with an integrated structure. It is powered by DC voltage and is widely used as a sound-generating device in electronic products such as compu...[Details]
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Traditional mechanical energy meters measure electricity with a meter driven by an aluminum disk driven by magnetic torque. This metering method has many defects such as short life, large error, regul...[Details]
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Today, Changdian Technology, a global leading integrated circuit manufacturing and technology service provider, donated RMB 3 million to the China Education Development Foundation to support the educ...[Details]
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1. Scope of application
This method is applicable to SSL products based on LED control circuits and heat sinks, and is applicable to lamp forms (including light source devices) and integrated ...[Details]
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/********************************************************************* Purpose: Build PCF8591 operation library Target system: Based on AVR microcontroller ...[Details]
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OnePlus' OnePlus 9, OnePlus 9E, and OnePlus 9 Pro smartphones are expected to be officially launched in mid-March 2021. It is reported that OnePlus may cooperate with Leica and greatly improve the ca...[Details]
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Opening remarks:
This section will teach you two knowledge points:
The first one: How to use the arbitrary dot matrix font display function display_lattice to display 8x16 characters, 16 dot matrix...[Details]
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In the first quarter of this year, Jinling Customs issued a total of 2,433 "Tax Exemption Certificates", exempting 208 million yuan in taxes. TSMC (Nanjing) Co., Ltd. is a key integrated circuit R&D ...[Details]
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KEILCx51 is a development tool for 8051 series microcontrollers and their hardware control systems. Any data type defined by it must be located in the storage area of 8051 in a certain storage type,...[Details]
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1 Introduction
With the development of information technology, inverter power supplies are increasingly widely used in the fields of communications, military, aviation, aerospace, ...[Details]
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How to choose internal standard method or external standard method in quantitative analysis
Choose a component that is close to the component to be measured but can be completely separated as the in...[Details]
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LED fluorescent lamps use CREE and AOD ultra-bright LED white light as the light source, and the shell is acrylic/aluminum alloy. The installation of LED fluorescent lamps is relatively simple. It is...[Details]
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An embedded system is a "dedicated computer system that is completely embedded in a controlled device and designed for a specific application." According to the definition of the British Institute of...[Details]
Microcontroller MCU
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