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For important shaft parts, in addition to measuring the dimensional accuracy of the outer diameter, the circular runout, coaxiality, verticality, flatness, etc. should also be measured. The measuring ...[Details]
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Speaking of burning programs for microcontrollers, everyone should be familiar with it. My first contact with microcontrollers was the 51 microcontroller, model STC89C52RC. At that time, the program ...[Details]
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The three-phase uncontrolled bridge rectifier circuit consists of a three-phase (diode) rectifier bridge and an output filter, as shown in Figure 1 (a). The positive and negative ends of the rectif...[Details]
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Early this morning, Apple officially announced that it will hold its annual Worldwide Developers Conference (WWDC22) online from June 6 (Monday) to 10 (Friday), which will be free for participating d...[Details]
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According to foreign media HotHardware, the Oberon APU graphics card frequency of PlayStation 5 reaches 2GHz. HotHardware says that at 2GHz, the PlayStation 5's RDNA-based GPU can output at...[Details]
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As cars are transformed from a means of transportation to a personalized consumer product that integrates leisure and entertainment, consumers' requirements for car entertainment are constantly incre...[Details]
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buzzer How the buzzer works buzzer the difference: The "source" here does not refer to the power supply. But the source of shock. In other words, the active buzzer has an oscillation source inside,...[Details]
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This serial port processing program is written based on the following protocol: Frame content FRAME = frame header FA + frame length len (excluding frame header and frame trailer) + data stream data ...[Details]
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This year, some electric vehicles have a range of 600 kilometers or 700 kilometers, but I believe many people can see that there is no progress in battery technology. Because they either change the N...[Details]
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On November 3, AnTuTu released the latest Android phone praise list for October. Samsung took the top two spots, and the third place was actually the newly released vivo S10 Pro. The data f...[Details]
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Homemade AVR MCU ISP Download Cable The function of the MCU programmer is to burn the debugged program into the memory of the MCU. The cost of the AVR MCU ISP download cable introduced in this articl...[Details]
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Since the second half of this year, under the combined influence of multiple factors such as wafer production capacity shortage and peak demand in the consumer electronics market, companies in the IC...[Details]
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According to relevant media reports on February 12, NIO Qin Lihong stated at a public event that the 150 kWh battery will be available during the summer vacation, with a two-week trial period, and po...[Details]
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I have been using J-LINK and recently switched to ST-Link. There are many cases where I cannot download programs. Here are several solutions (for STM32F103 series): 1# Did you not choose the Flash ...[Details]
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Basic concepts:
Memory:
SRAM static memory features: small capacity, high price, advantages: no software initialization required, can be used as soon as power is turned on.
DRAM dyna...[Details]