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74595 Appearance drawing______ QB--|1 16|--VCC QC--|2 15|--QA QD--|3 14|--SI QE--|4 13|--/G QF--|5 12|--RCK QG--|6 11|--SCK QH--|7 10|--/SCLR GND-|8 9|-- QH' |_____| Data te...[Details]
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In November, new energy vehicles continued to decline, having fallen year-on-year for five consecutive months. The cumulative production and sales volume only achieved a slight increase year-on-year,...[Details]
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I have been looking at single-chip microcomputers for a long time, so I want to make a summary. In fact, single-chip microcomputers are not as complicated as imagined in terms of chips! 89C51 has o...[Details]
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IGBT is a composite fully controlled voltage-driven power semiconductor device, which is recognized by the world as a representative product of the third technological revolution of power electronics...[Details]
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Photovoltaic inverters are the core equipment of photovoltaic systems. Their main function is to convert the direct current generated by photovoltaic modules into alternating current that meets the...[Details]
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1. Background knowledge:
Main factors affecting voice quality:
2. Standards for testing:
Main standards:
YD/T 1214-2002&YD/T 1215-2002 YD/T 1538-2006
Other relevant standards:
...[Details]
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Recently, there have been more and more speculations about Apple's iPhone 11, but most of them say that the new iPhone's rear triple-camera will make the machine ugly. After some hypothetical renderi...[Details]
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The recent test involves the modification of the low-level serial port code. After this modification, I suddenly realized that I was not very clear about some characteristics of the serial port befor...[Details]
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With the continuous improvement and development of control theory and the widespread application of computer technology in the field of industrial control, the automation level and control quality ...[Details]
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In May this year, Samsung Electronics confirmed that it was considering spending US$17 billion to build a new wafer factory in the United States, but one month has passed and many details are still p...[Details]
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Industry: Energy/Electricity
Products: cRIO-9014, Real-Time Modules, FPGA Modules, NI 9239, LabVIEW
Challenge: Develop a communications-flexible portable measurement device that can record high-f...[Details]
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It is reported that in order to further enhance the user experience of iPad and Mac Book, Apple is expected to gradually introduce MiniLED technology into new products next year to upgrade the color ...[Details]
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In order to strictly prevent the spread of the new coronavirus epidemic, China continues to postpone the start of school for universities, primary and secondary schools, and kindergartens. Online cou...[Details]
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Jiwei.com reported on October 20 that LG's world's first rollable smart TV Signature OLED R has been launched in South Korea. The 65-inch version is priced at 100 million won, or about 586,700 yuan. ...[Details]
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On November 14, Qualcomm announced the launch of two connectivity modules, QCC74xM and QCC730M, for IoT applications such as smart homes and smart appliances. These two modules are now available fo...[Details]
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