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English reference URL: http://www.at91.com/linux4sam/bin/view/Linux4SAM/U-Boot Prerequisite: Please install the arm-linux-gcc cross-compilation environment. (1) First, please download the uboot s...[Details]
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With the development of science and technology, the market has put forward higher requirements for the safety and comfort of automobiles. Performance improvement also means that the number and comple...[Details]
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There are many types of LED display screens. Different types of display screens have different uses, each with its own advantages and disadvantages. You should choose the right one based on your ne...[Details]
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This program mainly uses the comparison output function of the timer to generate PWM waves to control the LED. The comparison output of timer A corresponds to P2.3 P2.4. Therefore, a matching working...[Details]
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On December 9, the "2010 China
Audio and Video
Industry Technology and Application Trend Forum (AVF) and China
Digital TV
Industry Chain Construction Report Conference (DICC)" hosted by ...[Details]
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Behind the progress of the semiconductor industry lies a golden rule: Moore's Law. Since it was proposed in 1965, Moore's Law has been generally applicable for more than 50 years. According to Moore'...[Details]
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The touch switch composed of NAND gate has the advantages of small size and low power consumption, and is very suitable for small current appliances such as transistor radios as contactless switches....[Details]
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The LCD TV market has been growing rapidly in recent years. Market research firm DisplaySearch predicts a compound annual growth rate (CAGR) of 16% between 2008 and 2012, with total shipments expec...[Details]
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According to foreign media reports, General Motors has applied for a patent for an active pneumatic device system. The system is designed to maximize the vehicle's energy efficiency. (Image sour...[Details]
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Detailed page: http://alanzjl.sinaapp.com/2015/02/gpio_brr_bsrr_odr/ BRR, BSRR, and ODR are all used to control 16-bit pins. Among them, the upper 16 bits of BRR and ODR are unavailable (reserved),...[Details]
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(1) The surface roughness of the workpiece is too large, resulting in poor coupling between the probe and the contact surface, low reflected echo, or even no echo signal can be received. For in-ser...[Details]
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While an incandescent lamp behaves as a purely resistive load with self-stabilizing characteristics, an LED requires a current source. The luminous flux produced by an LED is approximately prop...[Details]
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Recently, the 2019 Summary Meeting and Standard Review Meeting of the National Smart Grid User Interface Standardization Committee was held. Participants exchanged views on the standardization of s...[Details]
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The half-bridge circuit is composed of two power switch devices and provides a square wave signal to the outside. The DC-DC converter based on the half-bridge is often used in the design of small a...[Details]
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Question: Separate the two BCD codes stored in accumulator A, find their product, and put the product back into A in the form of compressed BCD code.
The circuit uses the minimum system, same as 1....[Details]
Analog electronics
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