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Determine palindrome
int isReverseStr(char * aStr) determines the return value in the main function
int i,j;
int found=1;
if(aSTR==null)
return -1;
j=strlen(aStr);
for (i=0;i
if (...[Details]
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In some occasions of practical applications. For example, in the intermediate frequency amplifier of radio and TV receiver, the spectrum of the signal flare is concentrated in a narrow range around...[Details]
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In this article, we will talk about the minimum application system of 51 microcontroller. I believe that after you do this simple minimum system test, you will gradually become interested in the micr...[Details]
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2019 is coming to an end. As we bid farewell to the old and usher in the new, we will review the development of the semiconductor industry in 2019 by reviewing hot events. Affected by the internation...[Details]
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Morning news on December 26th, Beijing time. According to reports, an analyst at KB Securities said in a note to his clients last Friday that South Korea’s LG Group’s business covers consumer electro...[Details]
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DC-DC boost circuit
In this system, the DC-DC boost circuit is mainly composed of MAX1771. The controller adopts a unique control scheme, combining the advantages of PFM (pulse frequency modulation...[Details]
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The default crystal value in the STM32F407 library file is 25MHz. If the external crystal oscillator is 8MHz, the following places need to be modified:
1) Modify the value of HSE_VALUE
Will #define...[Details]
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The circuit shown in Figure 1 is a fully isolated, low power pH sensor signal conditioner and digitizer with automatic temperature compensation for high accuracy. The circuit provides 0.5% accurate r...[Details]
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1. 1/16 scanning routing method
To achieve 1/16 scanning, there are usually 4 signals, A, B, C, and D. Then you can choose 1 4-16 decoder or 2 3-8 decoders to achieve 16-line ...[Details]
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#include "reg52.h"
#define uchar unsigned char
#define uint unsigned int
sbit DSPORT=P3^7;
sbit key3 = P3^2;
sbit beep = P1^0;
uchar flag;
int tmp;
float t;
uint warn_d = 300; // ...[Details]
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With the popularity of new energy vehicles and the enhancement of environmental awareness, the construction and planning of electric vehicle charging piles have become an important part of urban in...[Details]
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Fiber optic gyroscope is a kind of laser gyroscope, which is the product of the close combination of inertial technology and optoelectronic technology. It uses the Sagnac interference effect, uses ...[Details]
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China Energy Storage Network News:
The dynamic performance test of the control and protection system of the Kunliulong DC project is in full swing. A total of more than 150 problems have been...[Details]
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Rockwell Automation's intelligent operation and maintenance Rockii solution empowers Nanjing Puyuan to be named "China's Top Ten Industrial Digital Transformation Enterprises in 2021"
(N...[Details]
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The inverter is an electrical device that converts AC power into AC power with adjustable frequency. It is widely used in industrial automation, motor drive and other fields. In practical applicati...[Details]
Programming Basics
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