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Jiwei.com News: Recently, companies listed on the Shenzhen Stock Exchange's Growth Enterprise Market have successively released their third quarter 2019 performance forecasts. As of today, the perfor...[Details]
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K214/J77 Single-ended Headphone Amplifier The single-ended amplifier circuit is a model of exchanging efficiency for sound quality. The circuit introduced below is a single-ended headphone ampli...[Details]
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1. stm32f103re, using external crystal oscillator 32.768k, without calibrating the rtc clock, using the serial port to print time, and using a serial port tool with timestamp to record the time recei...[Details]
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1 Introduction Serial ports (such as RS232) and parallel ports are often used to connect peripheral devices in traditional computer systems. However, both serial ports and parallel ports have insurmo...[Details]
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The figure shows a multi-purpose alarm composed of NAND gates. The circuits F1, F2, R1, and C1 form a key-controlled oscillator. F2, F1, R2, and C2 are also a key-controlled oscillator. The oscillati...[Details]
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1 Analysis of the principle of rotating clock
When an object moves quickly, the human eye can still retain the image for about 0.1 seconds after the image seen by the human eye disappears. Th...[Details]
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Battery-powered systems are often accompanied by low-power standby requirements. For example, automotive systems often require power supplies that can maintain output voltage regulation even under no-...[Details]
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On October 14,
the vivo X200 series flagship was launched, equipped with Goodix's fingerprint recognition solution, under-screen light sensor, touch solution, smart audio amplifier and audio so...[Details]
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It is reported that the US analog chip giant ADI recently issued the latest price increase letter to its distributors. According to the price increase letter circulated in the industry, ADI will incr...[Details]
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Apple has been working on ways to allow "Apple Glass" style headsets to perform chroma keying, or replacing solid color backgrounds with Apple AR images. An Apple U.S. patent application titled...[Details]
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The requirements for energy transmission and signal transmission are obviously different. The latter requires the integrity and authenticity of its content, and does not require much efficiency, whil...[Details]
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The official serial port program is worth learning!
(The serial port has both polling and interrupt methods for both receiving and sending)
Read a byte
#include p18cxxx.h
#include usart.h
...[Details]
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PCI9656 is a 64-bit, 66MHz PCI interface circuit launched by PLX. It has flexible connection performance and high-performance I/O accelerator characteristics, and is used in PCI, Compact PCI and em...[Details]
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功耗是当今电子设计以及测试中最热门也是竞争最激烈的领域之一。这是因为人们对高能效有强烈需求，希望能充分利用电池能量，帮助消减能源帐单，或者支持空间敏感或热量敏感型应用。
在经过30年的发展之后，硅MOSFET发展已经接近其理论极限。硅技术的进步如今非常缓慢，很少量的进步都需要付出巨大的开发成本。而像碳化硅(SiC)和氮化镓(GaN)等替代性半导体材料正在逐渐成为首选材料。特别是GaN在许多领...[Details]
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1. Preparation of startup documents
$ NOMOD51 ; Ax51 macro assembler control command: disable predefined 8051
; Customize the storage area that needs to be initialized after power-on
...[Details]
stm32/stm8
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