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Startup file head.S source code: @****************************************************** ************************ @File:head.S @ Function: Set up SDRAM, copy the program to SDRAM, and then jump to SD...[Details]
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A stepper motor is an actuator that converts electrical pulses into angular displacement or linear motion. In the absence of overload, the motor speed and stop position depend only on the frequency...[Details]
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1. Electromagnetic interference is everywhere
1. A terrifying planet
The biggest threat to humans from electromagnetic interference is actually the Earth we live on, and lightning i...[Details]
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Today, Zhang Yixing's studio announced that it has officially terminated its contract with Samsung due to unclear definitions of countries and regions for Samsung mobile phones. The details are as fo...[Details]
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1. Scheme design, comparison and demonstration 1.1 Sensor selection Solution 1: In order to achieve the function of tracking heat sources, use the temperature sensor DS18B20 for real-time tempera...[Details]
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74HC595 is a digital chip with 8-bit shift register and has output latch and three-state output.
Since it can drive so many digital tubes, driving a large screen dot matrix is still a dream...[Details]
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When you are still questioning whether the GPS in your hand is SIRF 3rd or 4th generation, we can only say that those are in the past. The new SIRF Prima era is about to come with the mass producti...[Details]
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On November 17, the 2020 Beijing International Microelectronics Symposium and IC WORLD Academic Conference was held in Beijing. At the conference, Zhang Jinfang, chairman of Beijing Chipone Technolog...[Details]
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Domestic semiconductor devices
The model consists of five parts
The first part: Arabic numerals indicate the number of electrodes of the device
The second part: Chinese phoneti...[Details]
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Looking ahead to 2019, it’s exciting to know that, with nearly 10 years to go, the automobile is in the midst of its biggest transformation since its invention more than a century ago. With the conti...[Details]
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Abstract: This article introduces the design of a wide dynamic range intelligent measurement system and several key technologies; the principles and implementation methods of self-zero and self-...[Details]
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AD conversion D conversion is analog-to-digital conversion. As the name suggests, it converts analog signals into digital signals. It mainly includes integral type, successive approximation type,...[Details]
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As a former leader in displays, Japan is undoubtedly glorious, but in the OLED era, they seem to be unable to keep up with the pace, but this does not mean they will give up. According to Korean me...[Details]
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New data compiled by the Association for the Advancement of Sustainability in Higher Education show that solar power installed capacity at U.S. colleges and universities has surged 450% in the past...[Details]
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After many days of hard work, we can finally use interrupts. But in order to allow RTOS to use timer interrupts, what kind of interrupts can be implemented in S3C44B0? There are two ways to impleme...[Details]