毕业设计（论文）--基于AT89S52单片机的口语PK系统的设计与实现.docVIP

题目： 学生： 学 号： 系 部： 专业： 指导教师： 二〇〇年 1. 明确PK考试系统的功能。 2. 设计方案比较及确定。 3. 学习使用相关软件。 4. 绘制硬件电路图。 5. 完成程序设计。 6. 完成样品制作及测试。 7. 完成毕业论文的撰写。 技术指标： 1. 单片机工作电压 4～5.5V 2. 单片机工作频率 MHZ 设计（论文）进度安排及完成的相关任务（以教学周为单位）： 周 次 设计（论文）任务及要求 1-4 毕业实习 5-7 查阅相关资料并制定设计方案 8-14 准备实验材料并进行设计分析 15-16 撰写论文 17 毕业答辩 学生签名： 日期： 指导教师： 日期： 教研室主任： 日期： Design and Implementation of Oral PK Based on Single-chip Microcomputer Abstract This design takes AT89S52 as its core. According to functional requirements, we put forward a variety of programs. The design ultimately adopts a program of the most economic, most reliable and highest success rate through comparison of these programs. As a result of this we produce a Haojing College examination system of PK of high practical value. After the completion of this design, it can achieve the following functions: Students can get a topic that randomly generated by the system by pressing the title key, and then it is displayed on the LCD. Jury teachers give the scores through the key in accordance with the performance of students, respectively, the scoring data is automatically delivered to the MCU I/O port, and AT89S52 read I/O port and put the data into register respectively. In addition, judges can also modify the scores through the modifying keys on the keyboard. When the confirming button is pressed the last time, the system will