摘要：

單片機(jī)自20世紀(jì)70年代問世以來，以其極高的性能價格比，受到人們的重視和關(guān)注，51單片機(jī)是各單片機(jī)中運(yùn)用比較廣泛的。

      本設(shè)計以STC89C52RC芯片為核心，輔以必要的外圍電路，設(shè)計了一個簡易的電子時鐘，它由5V直流電源供電。在硬件方面，除了CPU外，使用四個七段數(shù)碼管來進(jìn)行顯示。通過數(shù)碼管能夠比較準(zhǔn)確顯示時、分，LED一閃一滅顯示秒整個電子鐘系統(tǒng)能完成時間的顯示。

       通過這次設(shè)計讓我更深入了解單片機(jī)基本電路、如何控制和定時器的中斷編程的基本方法，從而鍛煉了我學(xué)習(xí)、設(shè)計和開發(fā)軟、硬件的能力。

關(guān)鍵詞：AT89C51；單片機(jī)；數(shù)碼管

     

Abstract

SCM since the 1970s, since the advent of its extremely high performance-price ratio, attention by people and attention, 51 SCM is the most typical and various microcontroller is the most representative of a kind. This design based on AT89C51 single chip chip as the core, with the necessary buffer circuit, design of a simple electronic clock, it by 5V dc power supply. In the hardware design, besides the CPU, the use of four seven segment digital tube to display, digital tube is a dynamic scanning display. Through digital tube can compare to accurately display and minutes, LED flash destroy display second one-chip computer programming, design, whole electric clock system can finish time display and reset, and other functions. This design enables me to further understand the basic circuit of SCC, and how to control and timer interruption programming basic methods, thus has tempered my learning, designing and developing software and hardware capabilities.

Keywords: AT89C51; SCM; Digital tube


 




目　　　　錄


1 緒論 1

1.1選題的目的和意義 1

1.2 硬件電路設(shè)計 1

1.3 軟件設(shè)計思路 2

1.4 程序流程圖 2

2 程序清單 4

3 電子鐘設(shè)計誤差的修正 8

4操作方法 9

5結(jié)論 9

參考文獻(xiàn) 10

致  謝 11

附錄 12