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1. As shown in Figure 4.3.1, P1.0-P1.3 of the AT89S51 microcontroller are connected to four light-emitting diodes L1-L4, and P1.4-P1.7 are connected to four switches K1-K4. Program the switch status ...[Details]
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In November 2017, Apple launched the iPhone X. Among them, the most popular feature that aroused heated discussions among the public and was reported by the media was the "face recognition unlockin...[Details]
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On August 22, the Jiaxing Municipal Development and Reform Commission of Zhejiang Province responded to the proposal of Qian Yaping to strengthen the policy support for user-side energy storage. Th...[Details]
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With the rapid development of Internet and
network
and their continuous expansion to the home field, the integration trend of
consumer electronics
,
computers
and
commun...[Details]
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There are several commonly used current amplifier circuits:
The first type: install a resistor under the speaker to sample the current. In fact, the feedback is still a voltage signal, whic...[Details]
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According to Windowslatest, after a group of Microsoft executives showed off the real Surface Duo, Jeff Teper, vice president of Microsoft 365 Enterprise, recently released a new real machine ...[Details]
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0 Introduction
The induction heating power supply uses the principle of electromagnetic induction to generate eddy currents in the heated workpiece through the induction coil to heat the workp...[Details]
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Sina Digital News reported on the afternoon of February 3 that the game "Genshin Impact" pushed version 1.3 update on the App Store today. In addition to new characters, new plots, and new act...[Details]
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Foreign media SamMobile intelligence shows that the Samsung Galaxy S21 FE will be officially launched during CES 2022, from January 5 to 8, 2022. IT Home reported that @MauriQHD previously re...[Details]
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Abstract: This paper presents a design method for realizing multi-channel data acquisition and communication control using 8051 single-chip microcomputer as the core. This method converts the colle...[Details]
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Main frequency 12M Function: 1. Use DS1302 to obtain clock signal and set time. 2. Can set 10 groups of bell time and has temporary bell function. The bell duration is 5S. 3. 1602 LCD screen di...[Details]
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Most people understand the principles of medium and short wave broadcasting transmission and reception, but how strong is the air signal transmitted by the radio transmitter at a certain point, and wh...[Details]
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By 2050, the global clean energy share will reach more than 80%, and the cumulative investment in the global energy internet will exceed 50 trillion US dollars. Liu Zhenya, chairman of the State Gr...[Details]
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Heart rate measurement
At present, there are two main methods for measuring heart rate on the market: potential measurement and photoelectric measurement. Potential measurement is a relatively...[Details]
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In the past year, mature process chip production capacity has been in short supply, and wafer foundry quotes have also risen accordingly. Taking 8-inch wafers as an example, in 2021, the price of 8-i...[Details]
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