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On December 24, Counterpoint released a report announcing the top ten best-selling smartphones in the world in Q3 2019. Among them, iPhone XR ranked first, occupying 3% of the market share. This ...[Details]
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CATL is planning two major black technologies. One is C2C (Cell to chassis), which is the integrated design of battery and chassis. The other is the next-generation "rare metal-free battery" - not on...[Details]
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According to a survey by TrendForce DRAMeXchange, as the US-China trade dispute heats up, the demand for smartphones and servers in 2019 will be lower than originally expected. In addition, the short...[Details]
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1.Heap and stack size
The size is defined in startup_stm32f2xx.s
Stack_SizeEQU0x00000400
AREA STACK, NOINIT, READWRITE, ALIGN=3
Stac...[Details]
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1. The system clock is initialized to internal 16M CLK_HSIPrescalerConfig(CLK_PRESCALER_HSIDIV1); // Clock Initialization Clock is 16M divided by 1 and 8M divided by 2 2. Initialize timer 2 and...[Details]
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According to the Taiwan Business Times, due to the impact of panel manufacturers maintaining low utilization rates, polarizer factory revenue hit bottom in January. In the first quarter, panel manufa...[Details]
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According to reports, the China Electric Vehicle 100 Association held a media communication meeting to discuss hot issues and development trends of new energy vehicles. Chen Qingtai, chairman of the ...[Details]
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1 Introduction
With the acceleration of the pace of life and the improvement of living standards, people have put forward higher requirements for the safety, intelligence, comfort and convenie...[Details]
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1. What should I do if the baseline of the RIGOL digital oscilloscope is offset without any signal? There are three reasons that may cause this problem: 1) The system has not been calibrated for ...[Details]
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Instantaneous voltage measurement requires a relative reference voltage. In general, the reference potential is the ground level. When measuring, the reference potential reference line position is de...[Details]
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On a 3-mile stretch of farmland in southwest Michigan, Ford is building a battery factory. The technology needed to build cheap, stable electric vehicle batteries will come from China's Contempora...[Details]
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What is Plywood
Plywood pictures
Plywood is a three-layer or more thin board made by peeling logs into veneers or planing wood into veneers, and then gluing them ...[Details]
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Below is the structure of the transistor and the various identification methods in the circuit diagram When the multimeter is set to the diode position (buzzer position) to measure the transis...[Details]
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The derivation of the fourth-order TLT voltage gain formula and its characteristics are becoming more and more popular, and the degree of information sharing is constantly improving, which has br...[Details]
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In both high-power and low-power power supplies , the loss of the secondary rectifier diode is a bottleneck for improving efficiency . How can we reduce the loss of the rectifier diode to an acceptab...[Details]
DIY/Open Source Hardware
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