51系列單片機實驗板設計

電子信息工程論文編號:DZXX268  論文字數:23187,頁數:54

目      錄
中文摘要
英文摘要
0前言．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．1
1硬件電路設計．．．．．．．．．．．．．．．．．．．．．．．．．．2
1.1 仿真實驗板的概況．．．．．．．．．．．．．．．．．．．．．．．2
1.2 仿真實驗板的資源．．．．．．．．．．．．．．．．．．．．．．．2
1.3 電路原理圖說明  ．．．．．．．．．．．．．．．．．．．．．．．4
1.3.1單片機最小系統的電路說明 ．．．．．．．．．．．．．．．．．．4
1.3.2 模數轉換器ADC0809的接口電路．．．．．．．．．．．．．．．．6
1.3.3 數模轉換器DAC0832的接口電路．．．．．．．．．．．．．．．．7
1.3.4 并行接口芯片8255A的接口電路．．．．．．．．．．．．．．．．8
1.3.5 數據/程序存儲器HM62256．．．．．．．．．．．．．．．．．．． 9
1.3.6 動態LED顯示與鍵盤．．．．．．．．．．．．．．．．．．．．．10
1.3.7 蜂鳴器驅動電路．．．．．．．．．．．．．．．．．．．．．．13
1.3.8 電源．．．．．．．．．．．．．．．．．．．．．．．．．．．．13
1.3.9 RS-232串行接口．．．．．．．．．．．．．．．．．．．．．．．14
2軟件電路設計．．．．．．．．．．．．．．．．．．．．．．．．．17
2.1 匯編由語言程序設計步驟．．．．．．．．．．．．．．．．．．．17
2.2 軟件實驗．．．．．．．．．．．．．．．．．．．．．．．．．．17
2.2.1 內外存儲器清零．．．．．．．．．．．．．．．．．．．．．．18
2.2.2 二進制轉換BCD碼以及BCD碼求和、相減．．．．．．．．．．．．19
2.2.3 二進制轉換成ASCII．．．．．．．．．．．．．．．．．．．．．．．20
2.2.4 內存塊移動．．．．．．．．．．．．．．．．．．．．．．．．．21
2.2.5數據排序．．．．．．．．．．．．．．．．．．．．．．．．．．23
2.2.6 程序跳轉表．．．．．．．．．．．．．．．．．．．．．．．．25
2.2.7 延時程序．．．．．．．．．．．．．．．．．．．．．．．．．26
2.3 硬件實驗．．．．．．．．．．．．．．．．．．．．．．．．．．27
2.3.1 外部存儲器控制信號檢測以及讀寫實驗．．．．．．．．．．．．27
2.3.2  D/A轉換實驗．．．．．．．．．．．．．．．．．．．．．．．28
2.3.3  A/D轉換實驗．．．．．．．．．．．．．．．．．．．．．．．．32
2.3.4 定時器實驗．．．．．．．．．．．．．．．．．．．．．．．．33
2.3.5  8255A輸入輸出實驗．．．．．．．．．．．．．．．．．．．． 36
2.3.6 鍵盤掃描顯示實驗．．．．．．．．．．．．．．．．．．．．．38
總結．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．46

 摘要
 51系列單片機教學實驗板既是一塊用戶實驗板，又是一種功能強大而實用的單片機開發調試工具。
 它與傳統的教學實驗板相比有如下的優點：（1）價格低廉。（2）使用簡單方便，只要有帶RS232串口的PC機就能進行實驗。（3）功能全，基本上具備單片機常用的接口，如數模轉換、模數轉換、存儲器、LED數碼管顯示、鍵盤人機接口、并行接口、串行接口，等等。
 采用本仿真開發實驗板，可使初學者迅速掌握單片機原理及應用，熟悉匯編語言、甚至單片機C語言。用本仿真開發實驗板，對用戶源程序進行實時在線調試，可極大地縮短單片機應用系統的開發時間。
關鍵詞:單片機;實驗板；接口電路；匯編語言
51 serial single chip processor teaching experiment board is a user experiment board, and also a powerful and practical single chip processor develop and debug tools.
Compared with traditional teaching experiment board it has following advantages :( 1) Cheap. (2) It is simple and convenient to use , so long as can carry on the experiment with a PC with RS232. ( 3) With complete function, possess the common user interface of the basic single chip processor, the ADC block, the DAC block, the memory , HID(Human Interface Device, such as the LED and the key board) , parallel interface, serial interface , and so on.
With this experiment board, the beginners can easily to grasp the principle and application of the Monolithic integrated circuit ,be familiar with assemble languages , even the C51 languages.  The character of on system debug can shorten the time to study Develop experiment board with emulation this, carry on to user source program real-time to debug online, can shorten construction period of the application system of the single chip processor greatly.
Key words: single chip processor; experiment board; interface; assemble languages