I burned the system image and used the busybox file system. But when I tried to mount the USB drive, an error occurred.There is nothing behind sda.
How to fix this? Thank you!...
I want to use a transistor switch circuit to control the on and off of the sensor to reduce power consumption, but the current cannot be amplified. Please recommend a circuit...
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Due to the successive increases in market prices of chips, panels and raw materials, many home appliance companies have been unable to bear the cost pressure, and the price increases in the terminal m...
With the continuous development of communication technology and satellite positioning technology, the accuracy of wireless positioning systems and the speed of information collection have become th...[Details]
1. Analysis of the reasons for the failure of assembly software assembly:
Here we use the macro assembler A51 in the Keil C51 software package as the compiler. When writing the assembly langua...[Details]
On February 25, Xinwangda disclosed the plan for the 2021 fixed increase. The announcement shows that the target of this issuance is no more than 35 specific investors that meet the requirements of t...[Details]
On March 23, multi-axis servo manufacturer Moton Transmission announced the completion of nearly 100 million yuan in Series A financing, led by Guoke Investment and followed by old shareholder Si...[Details]
0 Introduction
The smart home system is an open, intelligent, and humanized integrated home system that uses a number of high-tech technologies. It organically combines broadband Internet, ho...[Details]
The principle of clock The clock management unit is the core unit used to manage various clock modules in the cortex-A9. The clock of 4412 generates clock signals of various frequencies required by t...[Details]
Level Description
0 Constant merging: The compiler pre-calculates results and replaces expressions with constants whenever possible. This includes runtime address calculations.
Optim...[Details]
According to the Liberty Times in Taiwan, news has come out that wafer foundry capacity is very tight, and TSMC will cancel the previous years' discounts on next year's 12-inch unit prices, which is ...[Details]
Recently, Largan Precision, the leader in the optical lens industry, and Advanced Optical announced a settlement, ending the eight-year-long case of stealing trade secrets. According to Largan’s anno...[Details]
According to foreign media reports, Tesla plans to launch the "Tesla Semi" self-driving truck in 2020. In addition to cargo transportation, some companies have thought of other feasible applications,...[Details]
If nothing unexpected happens, Samsung will continue to launch the new generation of Galaxy Note20 series flagships in the second half of this year. As June draws to a close, this blockbuster n...[Details]
At present, with the rapid development of the information industry, all kinds of ships are in urgent need of being equipped with more high-quality and low-cost small and medium-sized information moni...[Details]
introduction: First of all, double-wire electric shock and contact with two live points at the same time are always dangerous and cannot be reliably protected. As for single-line electric shock, that...[Details]
On August 8, Zhongxin Jianhai Semiconductor Technology (Anhui) Co., Ltd. (hereinafter referred to as Anhui Zhongxin Jianhai) successfully completed the trial production of its ceramic thin-film hybri...[Details]
1 Power-on surge current
At present, considering factors such as volume and cost, most AC/DC converter input rectifier filters use capacitor input filtering, and the circuit principle is s...[Details]
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