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start.S source code: .global _start _start: ldr sp, =0xD0030000 // Initialize the stack because the C function will be called later bl clock_init // Initialize the clock bl ddr_init // ...[Details]
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TDA1521 subwoofer circuit diagram and speaker diagram
Founder computer audio circuit diagram
LM3886 subwoofer circuit diagram
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Fluke Networks has introduced an economical entry-level copper cable certifier, the FLUKE DSX-600 CH, which can improve the productivity of small-scale cable installation work and increase the return...[Details]
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Apple has reportedly agreed to settle a six-year class-action lawsuit alleging that it intentionally slowed down iPhone 4S devices after the 2015 iOS 9 update, and will pay $15 each to some affected ...[Details]
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On April 11, the highly-watched leader in smart chips, Unigroup Guoxin (002049), disclosed its 2021 performance report and the first quarter performance forecast for 2022. The company achieved operat...[Details]
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Some netizens revealed that a poster attacking competitors was posted in a 4S store of a certain domestic brand car. The content was as follows: “1. SAIC Roewe is a Chinese mid-to-high-end independen...[Details]
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"We have some big changes coming to iPad," said Craig Federer, Apple's software chief. Apple unveiled a big software update for iPad at WWDC, and now it's splitting up iOS to form a new iPadOS for ta...[Details]
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"Micron's 9300 series SSD. Its four key performance indicators, random read and write and sequential read and write, are industry-leading. Its power consumption is 28% lower than its previous generat...[Details]
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1 Introduction
At present, there are about 1,000 gas stove manufacturers in my country. The annual output is about 30 million units. Among them, there are only about 100 compani...[Details]
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Pseudo-instructions do not have corresponding opcodes, and the operations they perform are called pseudo-operations.
The role of pseudo-instructions in the source program is to make var...[Details]
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In June 2018, a "black box" that can open a smart lock in three seconds was exposed online. A few days ago, CCTV reported again that a large number of smart locks have security risks. For users who h...[Details]
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The usage of bit is similar to sfr, except that sbit is a bit operation, which is used to assign a specific bit in an sfr to a variable, so that the program can use the variable to clear or set the b...[Details]
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OZ8022 is a non-isolated, high-efficiency, precise constant-current driver chip from O2O Technology, using a buck architecture. The most attractive feature is the three-stage dimming function achie...[Details]
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When evaluating an oscilloscope, bandwidth is important, and for high-speed applications, high bandwidth is a necessity. However, the true purpose of an oscilloscope is to display the signal of inter...[Details]
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There are many versions of the "small three electrics" of new energy vehicles. However, the most recognized version is the "small three electrics" consisting of the on-board charger OBC, the on-boa...[Details]