What is the power-off mode? Generally, to save power, you just put it in standby mode. To exit the power-off mode, you can only use hardware reset, not interrupts. Why?...
From: https://blog.adafruit.com/2020/05/11/ci ... -released/This is the first beta release of CircuitPython 5.4.0. At the time of release, this version adds basic low-power support in time.sleep().New...
Does each process have a page table? Isn't the system space of each process [0x80000000-0xffffffff] the same physical address? The page table is at 0xc00000000, and each process page table is differen...
Experts, has anyone used 74HC165 chip? I want to use it to combine with 51 single chip microcomputer and LED digital tube to make a counter. But I don't know how to use this chip. Experts, please shar...
Ptpython is an advanced Python REPL. It works with all Python versions from 2.6 to 3.7 and runs cross-platform (Linux, BSD, OS X, and Windows).FeaturesSyntax highlighting.
Multi-line editing (up arrow...
When the WDP500-2A plane grating monochromator is used to test the emission wavelength of a high-power laser diode at different currents, the matching of the laser diode has the disadvantages of lo...[Details]
In public places such as schools, government agencies, factories and mines, as well as public corridors in residential areas, the phenomenon of long-burning lights is very common, which causes a h...[Details]
0 Introduction
With the rise and continuous improvement of the solid-state lighting industry, light-emitting diodes (LEDs) have become an alternative lighting technology and are gr...[Details]
Since the late 1990s, with the demand for higher system efficiency and lower power consumption, the technological update of telecommunications and data communication equipment has promoted the deve...[Details]
Rated capacity refers to the maximum output power of the UPS (the product of voltage V and current A).
Usually, the UPS power supplies sold on the market are marked with "W" (watt) for smaller...[Details]
HL201A is a special thick film driver integrated circuit with a capacity of less than 75AGTR developed by Xi'an Power Electronics Technology Research Institute. The article explains the pin arrange...[Details]
1. Electromagnetic compatibility design
Electromagnetic compatibility refers to the ability of electronic equipment to work in a coordinated and effective manner in various electromagnetic env...[Details]
Modern communication equipment, portable electronic products, laptops, electric vehicles, small satellites, etc. generally use batteries as power sources and are widely used. However, the batteries...[Details]
At present, products in the field of monitoring generally focus on the field level, that is, the client/server (C/S) model is adopted, the purpose of which is to ensure the stability and reliability o...[Details]
As the electromagnetic environment in space becomes increasingly complex, the shielded cables used to transmit weak signals in the test system are easily affected by external electromagnetic distur...[Details]
When selecting EMC test equipment, we often encounter the following questions: What is the difference between an EMI receiver and a spectrum analyzer? Why should a receiver be used for EMI testing?...[Details]
Some experience we have accumulated when debugging a system using Keil C
1. Since Keil C does not support Chinese very well, the displayed cursor will be inconsistent with the actual cursor positi...[Details]
1. Overview
Infrared temperature measurement technology plays an important role in product quality control and monitoring, online equipment fault diagnosis and safety protection, and energy co...[Details]
1. Explanation of some common English abbreviations in ARM
MSB: most significant bit;
LSB: least significant bit;
AHB: Advanced High-Performance Bus;
VPB: VLSI peripheral bus th...[Details]
The automotive environment is very demanding for electronics: any circuit connected to the 12V power supply must operate within the nominal voltage range of 9V to 16V. Other pressing issues include...[Details]
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