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基于单片机的LED显示屏制作_毕业设计论文 - 百度文库

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  • 2025/7/10 18:33:38

ڵƬLEDʾ

ժ Ҫ

LEDʾΪһ˵ʾɶLEDܷװ. LED ʾʾ֡֡ŵ, ͨʾ֡ʱ䡢ٶȡϵͳ״̬ȡ

3216LEDʾơSTC˾40ŵƬSTC89C52RCΪģΪϵͳLEDʾĶ̬ƺͿ̡ͨоƬĸ74HC164ĸ74HC595ʾʾƲ888LEDʾģһ3216ʾģʽȫʾ֣Բö̬ʾʽʾֻɫͼʹͼλܹʵ־ֹ롢Ƴȶַʽʾ

LEDʾӲ˼·Ӳ·ֵĹܼԭϵͳӲƷͼ c Գȷ档Ҫʾĺģ뱣ij洢ռ䣬ƬͨȡģӦĴȻԲͬʾʽʾڵϡLEDʾҪ⺺ʾڸطΧڣֻͨ򵥵ļͿԶʾչ

ؼʣSTC89C52RCƬLEDʾ̬ʾ

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Abstract

LED dot matrix display as a new display device is composed of multiple independent LED light emitting diode package together. LED dot matrix display can display Chinese characters, numbers, symbols, and so on, usually is used to display text, time, speed, system status and so on.

This article is a 32 16 dot matrix LED electronic display design. America STC company production of the 40 pin STC89C52RC MCU is the core of complete machine. The design of LED dot matrix display and development process is presented in this paper. MCU controls four rows drivers of 74HC164 and four columns drivers of 74HC595 to drive the LED. The design uses 8 piece of 8 8 dot matrix LED display module to form a piece of 32 16 dot matrix LED display mode. Full screen can display two characters. Using dynamic display to display a variety of text, monochrome images, graphics or text, can be achieved quiescence, moving in and out and so on by various ways.

This paper designs the hardware of LED dot matrix display and provides various parts of the hardware circuit and the principle functions including the system of specific hardware design, software flowcharts and series c language program. To be displayed character font code is stored in a storage space. The microcontroller by reading the font and make the appropriate treatment to display the character on dot matrix screen in different ways. LED display is mainly used for indoor and outdoor displaying of Chinese characters. The screen is expanded by a simple cascade under the load range.

Key words:STC89C52RC Micro Controller UnitLED Lattice DisplayDynamic

Display

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1ǰ ......................................................................................................................................... 1

1.1о ....................................................................................................................... 1 1.2о ....................................................................................................................... 3 2ϵͳ ......................................................................................................................... 5

2.1Ҫ ........................................................................................................... 5 2.2Ƚ֤ ........................................................................................................... 5

2.2.1̬ʾʽ ..................................................................................................... 6 2.2.2̬ʾʽ ..................................................................................................... 6 2.3ݴ䷽֤ ................................................................................................... 6 3ϵͳӲ ......................................................................................................................... 8

3.1·ͼ ............................................................................................................... 8 3.2Ԫ· ............................................................................................................... 9

3.2.1ƬϵͳΧ· ..................................................................................... 9 3.2.2ģ· ............................................................................................... 13 3.2.3ģ· ............................................................................................... 15 3.2.4 LEDʾ .............................................................................................. 17

4ϵͳ ....................................................................................................................... 20

4.1 ................................................................................................................. 20 4.2ʾһֽڳ ..................................................................................... 22 4.3ʾӳ ......................................................................................................... 23 4.4 ..................................................................................................................... 25

4.4.1롢ĿγĿļ ................................................................... 25 4.4.2еԡ۲ ....................................................................................... 27

5ϵͳ ................................................................................................................... 28

5.1 Proteus ........................................................................................................ 28 5.2Ӳ ..................................................................................................................... 28 5.3 ..................................................................................................................... 29 6ܽ ............................................................................................................................... 31 л .......................................................................................................................................... 32

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ڵƬLEDʾ ժ Ҫ LEDʾΪһ˵ʾɶLEDܷװ. LED ʾʾ֡֡ŵ, ͨʾ֡ʱ䡢ٶȡϵͳ״̬ȡ 3216LEDʾơSTC˾40ŵƬSTC89C52RCΪģΪϵͳLEDʾĶ̬ƺͿ̡ͨоƬĸ74HC164ĸ74HC595ʾʾƲ888LEDʾģһ3216ʾģʽȫʾ֣Բö̬ʾʽʾֻɫͼʹͼλܹʵ־ֹ롢Ƴȶַʽʾ LEDʾӲ˼·Ӳ·ֵĹܼԭ

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