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Development board: tiny4412ADK+S700 4GB Flash Host: Wind7 64-bit Virtual machine: Vmware+Ubuntu12_04 u-boot:U-Boot 2010.12 Linux kernel version: linux-3.0.31 Android version: android-4.1.2 Above ...[Details]
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1. Bootloader startup
The bootloader itself is called the boot program of the embedded system. However, it supports multiple architectures such as X86, MIPS, PowerPC, ARM, etc.
For the ...[Details]
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Smart meters are electronic devices that record and report the consumption of utility services such as electricity, gas, water, and heating/cooling via some sort of communications network. In this wh...[Details]
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In wireless communication, signals are always distorted when transmitted over non-ideal channels, which is specifically manifested as inter-symbol interference. To reduce interference, an adaptive eq...[Details]
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Low noise amplifiers (LNAs) are critical to separating the signal from the noise in a communications receiver. There are other techniques for controlling noise within the system, including filterin...[Details]
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1. Bandwidth: refers to the frequency value when the sinusoidal input signal decays to 70.7% of its actual amplitude, that is, the -3dB point (based on a logarithmic scale). This specification indica...[Details]
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On February 24, the OPPO Find X5 series launch conference was officially held. The MediaTek Dimensity 9000 that everyone expected did appear, but it was very embarrassing. It was only explained in th...[Details]
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"From the perspective of the development curve of power batteries , there are three curves that have been experienced according to the end market demand, namely the energy density curve, the low-cost...[Details]
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Precision agriculture has become a trend in the development of agriculture in my country. Timely and accurate acquisition of farmland information is the basis for the implementation of precision a...[Details]
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1 Introduction
Nowadays, microcontrollers have internal EPROM and FLASH for users to store programs. In order to prevent unauthorized access or copying of the program in the microcontroller, m...[Details]
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I recently completed a brushless DC motor speed control project. I consulted various blogs and papers written by experts. Here I will just make a small summary: (PS I recently encountered a related...[Details]
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Recently, the well-known research organization IHS Markit released the 2020 global photovoltaic inverter market rankings.
Among them, Chinese company Huawei once again ranked first in the worl...[Details]
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Aeration is a key parameter control in sewage treatment. There are many parameters that affect the aeration volume, such as water inlet load, sludge quality, etc. Dissolved oxygen has hysteresis. It i...[Details]
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While improving the anti-interference ability of hardware systems, software anti-interference has been increasingly valued for its flexible design, saving hardware resources and good reliability. Ta...[Details]
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At present, most of the entrances to residential buildings in small and medium-sized cities are open, which makes it convenient for residents to enter and exit, but also brings many inconveniences...[Details]