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Soil pH refers to the acidity and alkalinity of the soil. Soil pH has a certain impact on soil fertility, which in turn affects the growth of crops. Therefore, correctly judging the soil pH of crops ...[Details]
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According to exclusive reports from foreign media sammobile, the AMOLED screen equipped with the Samsung Galaxy S22 series is expected to perform beyond everyone's expectations and set a new record f...[Details]
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This circuit uses a digital/analog converter DAC-20EX and an operational amplifier OP17G to form an A/X type hyperbolic function with an extended range, where A is an analog constant and X represents...[Details]
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According to the Economic Observer, due to the impact of the epidemic, the construction of 5G base stations in Beijing is temporarily unable to proceed. In response to this, Beijing Mobile said that ...[Details]
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I won't go into details about the installation of Eclipse, CDT, OpenJTAG driver, toolchain, and OpenOCD. Please install them according to the instructions in the CD that comes with OpenJTAG. Here is t...[Details]
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Problem description:
I transplanted the tslib test program ts_test.c touch screen operation program into my application program, and found that a segmentation fault occurred when the pro...[Details]
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When the inverter is not used, two contactors are required to control the forward and reverse rotation of the motor. However, this is no longer necessary after the inverter is used. The starting, f...[Details]
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Preface
In recent years, with the deepening of reform and opening up, people's living standards have greatly improved, more people have participated in physical exercise, and the level of athle...[Details]
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People engaged in power operations know that the development of industrial production and science and technology are inseparable from the automated control of PLC. PLC can be broadly understood as:...[Details]
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1 Hardware composition
The detection system is mainly composed of two parts: signal interface and virtual instrument (Figure 1). The signal to be tested is led out from the interface on the contro...[Details]
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Abstract: This article introduces an adaptive control A/D conversion coding circuit, focuses on analyzing the automatic gain control, error compensation and A/D conversion coding principles of t...[Details]
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Semiconductor discrete devices mainly include diodes, triodes, transistors and thyristors. Based on power handling capacity, they are divided into low-voltage and low-power (voltage below 200V, curre...[Details]
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In recent years, my country has made remarkable achievements in the development of new energy such as wind power and photovoltaic power generation. The installed capacity has been ranked first in t...[Details]
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How to connect the four wires of the stepper motor
As stepper motors are increasingly used, more and more manufacturers are producing them. Some small brands of stepper motors do not have inst...[Details]
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With
the hot sales of
iPhone
, more and more touch screen phones are appearing around us. In order to cope with the impact of Apple iPhone, major mobile phone manufacturers have launched ...[Details]
Mobile and portable
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