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Use the parallel port P1 of AT89S51 to connect a 4×4 matrix keyboard, and use P3.0-P3.3 As input line, P3.4-P3.7 as output line; the digital button serial number "0-9" is displayed on the digital tub...[Details]
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Recently, the energy storage battery module PACK and system integration project jointly funded by Honeycomb Energy and Longking Environmental Protection officially started construction in Longking ...[Details]
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0 Introduction Due to work needs, the power supply system we developed requires both leakage protection and uninterrupted power supply capabilities. Therefore, we use a 3kVA high-frequency online u...[Details]
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Digital multimeters are relatively simple measuring instruments. In this article, the editor will teach you how to use digital multimeters correctly and how to maintain them. Starting from the measur...[Details]
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The measurement process of a digital multimeter is that the conversion circuit converts the measured value into a DC voltage signal, and then the analog/digital (A/D) converter converts the voltage...[Details]
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According to the performance report, China Unicom achieved main business revenue of 275.8 billion yuan in 2020, a year-on-year increase of 4.3%, and net profit of 12.525 billion yuan, a year-on-year ...[Details]
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Traditional circuit performance testing uses manual testing to verify whether the circuit is qualified, which has the following main disadvantages: First, during the test process, the connection betwe...[Details]
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Red Lion Controls guest on element14’s Innovation Experts podcast Red Lion Controls explores how to use edge intelligence and integrated systems to build an industrial IoT platform architecture, An...[Details]
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Foxconn has always been known in the public eye as a "contract manufacturer", but in recent years, it has been expanding its business and seeking transformation, hoping to tear off the label of "cont...[Details]
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With the upgrading of headphones, wireless Bluetooth headphones have finally been launched and successfully replaced wired headphones. Wired headphones are not only inconvenient but also restrictiv...[Details]
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As someone who leads an FPGA corporate marketing team, I have to say that FPGAs are continuing to deliver on their promise to enable system-on-chip designs, thanks to significant advances in proc...[Details]
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1 Introduction
Infusion equipment is indispensable in hospitals. However, the drip rate of common infusion equipment is manually controlled by patients or doctors, which is limited and inconven...[Details]
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Currently, a variety of PWM control methods have been used in AC variable frequency speed regulation systems, among which space vector PWM (SVPWM) has been widely used in motor speed regulation due...[Details]
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Program Overview
AMEC's automotive combination switch solution is based on the ARM Cortex M0+ core BAT32A237 chip, supports switch input detection for lights, steering, wipers, washing, etc....[Details]
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Summarize the problems encountered before:
1. For similar problems:
mtd- read(0x44 bytes from 0x68cf44) returned ECC error
jffs2_get_inode_nodes(): CRC failed on node at 0x0068c684: Rea...[Details]
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