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Introduction Many stores are unattended after work. When there is a theft alarm or fire alarm, people hope that the store can automatically alarm, and at the same time, they can use the phone to fur...[Details]
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Strategy Analytics' latest research report points out that global smartphone shipments in Q4 2019 were 375 million, which was stable compared with the same period last year. Apple ranked first with a...[Details]
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The support for S3C2440 RTC under Linux is very complete. We only need to make simple modifications to use RTC
1、vi arch/arm/mach-s3c2440/mach-smdk2440.c
static struct platform_device *sm...[Details]
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I haven't written any program for several days. The reason is very simple: I have become obsessed with the new version of Journey to the West and have been reading it for several days in a row. What ...[Details]
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1 Fingerprint Recognition Principle
Capacitive sensor is a type of fingerprint recognition sensor. It captures fingerprint images through electronic measurement design. The surface is an i...[Details]
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In the data center, UPS is a necessary power supply safety device. How to monitor the working status of UPS battery wirelessly? This article introduces a new idea. 1. UPS UPS (Uninterruptible Po...[Details]
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On August 31, according to an analysis by digitimes, a foreign mobile digital observation media, the shipment volume of the iPhone 12 series this year will be between 63 million and 68 million units,...[Details]
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For applications that do not require dimming, the electrolytic capacitors can be eliminated by using LinkSwitch-PH. Our
Single-stage PFC
/ constant current design allows the designer to elimina...[Details]
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Introduction
Chengdu Insega Semiconductor announced that its industry-leading 53Gbaud DML Driver has begun to provide samples. The chip can be widely used in various single-wavelengt...[Details]
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In the computer field, stack is a concept that cannot be ignored. It is used in almost all C language programs we write. But for many beginners, stack is a very vague concept. Stack: a data structure,...[Details]
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1. Overview
In industrial control, many control processes have complex mechanisms, large lags, and the control objects have variable structures and time-varying characteristics. For a controlled qu...[Details]
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Topic content:
Working model of electric vehicle brushless motor controller with short circuit
Working state of MOSFET when the controller is short-circuited
Calculation formula f...[Details]
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With the development of information technology and the deepening reform of medical and health care, the implementation of the National Golden Health Project has greatly accelerated the process of h...[Details]
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According to Bloomberg, this week, electric car maker Tesla announced that its chief technology officer, JB Straubel, is leaving. Straubel said he was taking a break and then going back to "create th...[Details]
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The resolution of a servo motor encoder is one of the important indicators for measuring encoder performance, which directly affects the accuracy and stability of the servo system. This article wil...[Details]
Making friends through disassembly
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