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AVR's IO has three registers, DDRX, PORTX, and PINX.
DDRX direction, DDRX=1, output; DDRX=0, input.
For example, to set the PA0 port as input, you can write DDRA&=~(1
PORTX has two cases
If D...[Details]
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The circuit diagram is as follows: The microcontroller source program is as follows: #include reg51.h #include intrins.h unsigned int times; unsigned int controlway; unsigned int flag = 0; u...[Details]
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What are the functions and uses of smart rings
A smart ring is a ring that integrates smart technology and has multiple functions and effects. The following are common functions and effects:
...[Details]
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1 /* Data sending format: 2 * 0 1 2 3 4 ... DataLenth-1 DataLenth 3 * HEAD1 - HEAD2 - DataLenth(n+1) - data_1 - data_2 - ... - data_n - CheckSum 4 * CheckSum = HEAD1 + HEAD2 + DataLenth + data_...[Details]
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Samsung has previously launched a number of foldable smartphones and is also the first company to develop a 108MP mobile camera sensor. Now, a newly released patent reveals that Samsung is using...[Details]
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MR-J2S-D ]A Peripheral equipment connection diagram
Connection with auxiliary equipment
Peripheral devices are connected to MRJ2S-A in the following manner.
Since it is equippe...[Details]
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The general composition and unit structure of
integrated operational amplifier
circuits
, such as constant current source
circuits
, differential amplifier circuits, CC-CE, CC-CB cir...[Details]
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1 Introduction
At present, there are many products for residential electricity meter reading in China. Judging from the actual investment in recent years, the application of IC card meters and...[Details]
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A clip-on "current probe" such as the Tektronix P6021 is very useful for displaying the current waveform on an oscilloscope. Unfortunately, there are always some limitations to low-frequency response...[Details]
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introduction
The trend in automotive and industrial systems is to replace mechanical functions with electronic components, resulting in a multiplication of microcontrollers, signal processors, ...[Details]
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Circuit principle : Routing diodes VD1~VD4 form a bridge rectifier circuit, which is then limited by R1, filtered by C1, and stabilized by VD6 to obtain a 10V DC voltage to provide power for the 7...[Details]
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The development board used is Puzhong Technology HC6800-ES V2.0
PC: Win7 64 bit
Compiler software: keil uversion2
Burning tool: PZ-ISP V1.82 developed by Puzhong Te...[Details]
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The compiler tool used is keil. When using keil to build an stm32 project, a startup file, STM32F10x.s, is generally generated. In the library function provided by st, cortexm3_macro.s and stm32f10x_...[Details]
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Beijing time, July 6, according to csmonitor website, many cars currently have so-called autonomous driving, automatic driving or assisted driving functions. Cars can gradually master certain tri...[Details]
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NC machine tools and CNC machine tools are two different types of CNC machine tools, and they have some differences in function, structure and application.
Definition and Principle
...[Details]