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1. History of LED 50 years ago, people already knew the basic knowledge that semiconductor materials can generate light. In 1962, Nick Holonyak Jr. of General Electric developed the first practical...[Details]
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Design Principle
With the rapid development of various high-tech cutting-edge technologies, the traditional design of fast-front pulse sources with fixed delay times can no longer meet the nee...[Details]
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0 Introduction
Aluminum alloy is an important civil and strategic metal material, and its mechanical properties are closely related to the grain size and morphology of the alloy. However, ...[Details]
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1. Interrupts are divided into two categories: internal interrupts and external interrupts.
2. External interrupts. 24 external interrupts occupy GPF0-GPF7 (EINT0-EINT7), GPG0-GPG15 (EINT8-EINT23)....[Details]
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In recent times, the new energy MPV market has heated up rapidly. Previously, Denza D9, Lantu Dreamer, and Jikrypton 009 were launched. Later, Hechuang V09 was unveiled at the Guangzhou Auto Show las...[Details]
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Analysis of long-tail differential amplifier circuit
Long-tail circuit: As shown in the figure, this is a typical differential amplifier circuit. Since Re is connected to the load power su...[Details]
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On October 17, at the 2024 World Intelligent Connected Vehicle Conference which opened today, Yu Chengdong, Huawei's executive director, chairman of the Terminal BG, and chairman of the Intelligent...[Details]
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Reading Excel Data Using ActiveX in LabVIEW
There are many examples on the Internet about reading Excel, but I have never found a way to read the data of an entire sheet in a file, so here I will ...[Details]
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Corrections from the previous version. sd3008 does a bus reset 0.5s at the beginning of each communication, so there is no need to consider the i2c bug problem of stm32. And, should the HAL libra...[Details]
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After understanding the assembly before kernel startup, let's take a look at the formal C language startup code, that is, our start_kernel function. start_kernel is quite large, and each function call...[Details]
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Interstitial skin fluid (ISF) is a rich source of biomarkers, complementing traditional biofluids such as blood and urine. It contains important metabolic and immune biomolecules and is closely rel...[Details]
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1. Put the compiled buttons1711.c file into /home/mini2440/linux-2.6.32.2/drivers/char/ 2. Modify Makefile In the same directory (the directory where you put the .c file in step 1 /home/mini2440/...[Details]
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ifndef _SKEY_H_
#define _SKEY_H_
#define uchar unsigned char
#define uint unsigned int
#define SKEY_FR RA0
#define SKEY_AC RA1
#define SKEY_RDEF RA3
#define BT_FR 0X0F //REC key value
#de...[Details]
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This article will discuss a basic concept: the relationship between signal rise time and signal bandwidth.
For digital circuits, the output is usually a square wave signal. The rising edge o...[Details]
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European smart home company Somfy will start making its Tahoma gateway compatible with HomeKit next month, according to the iFun.de website. The gateway is used to control a range of products from ...[Details]
PCB Design
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