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introduction
In the production site control system, the installation, debugging and maintenance of intelligent equipment and conventional electrical equipment require a considerable number of electri...[Details]
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This article introduces a new method for measuring the Young's modulus of metal wire by using a photoelectric sensor. The key to this measurement is to accurately measure the tiny length change of the...[Details]
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1. Experimental purpose: Let the six digital tubes display numbers dynamically and calculate the seconds 2. Experimental analysis: a. Because we need to display the seconds, we should first def...[Details]
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The grayscale of LED display is also called color scale or grayscale, which refers to the degree of brightness. For digital display technology, grayscale is the determining factor of the number of ...[Details]
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The test indicators of amplifiers can be divided into two categories: linear indicator test and nonlinear indicator test. The test of linear indicators is based on the measurement of S parameters a...[Details]
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OFweek Cup · OFweek 2023 China
Robot
Industry Annual Selection (abbreviated as OFweek Robot Awards 2023) is jointly organized by OFweek, China's high-tech industry portal, and its authorita...[Details]
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DMA can be considered as connecting two "address" data channels. DMA shares the system bus and does not occupy the CPU, so it can achieve fast data transfer. Here we take DMA connection between memor...[Details]
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1 Description
Experimental platform: JZ2440
CPU: S3C2440
2 S3C2440 startup process
Figure 1 S3C2440A Memory Map after Reset
S3C2440 supports booting from a va...[Details]
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1 Introduction
The daily routine of institutions and colleges requires timing and beep prompts. The author uses AT89C51 microcontroller and LM386 audio power amplifier to form an automatic timing a...[Details]
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On January 13, the Zhejiang Power Grid Enterprise Supplier Conference with the theme of "Integrity and Quality, Building a New Business Ecosystem" was held in Hangzhou, with hundreds of supplier re...[Details]
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Well-known digital blogger @芒果先生 published an article analyzing why Apple has the confidence to provide 5W charging as standard for iPhone. He said: Apple considers that if the cost of fast charging ...[Details]
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Should Samsung launch the Exynos 1000 after the Exynos 990 chip? It seems that there are still variables. The score of the phone believed to be the Galaxy S21 Plus on Geekbench indicates that the nex...[Details]
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The parameter of the SysTick_Config(SystemFrequency / 10) function is the value of the systick reload timer. The systck counting frequency is 72000000 times per second, so 7200000 times is 1/10 s...[Details]
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1 Introduction
Precision time interval measurement is a key technology in industrial, national defense and power applications. Pulse counting is the most basic method in time interval measurem...[Details]
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There are many methods for tracking the sun, which can be mainly divided into two methods, namely photoelectric tracking and tracking based on the apparent sun's motion trajectory. The advantag...[Details]