西安科技大学单片机课程设计 学院：电气与控制工程学院 班级：电气工程及其自动化 14XX 班 组长：XXX 学号：1406060XXX 组员：XXX 1406060XXX 组员：XXX 1406060XXX 2025 年 12 月 30 日摘要：..........................................................................................................................31 课程提出背景..............................................................................42 设计内容及要求...........................................................................43 系统整体方案设计....................................................................43.1 单片机控制方案图...............................................43.2 方案比较..........................................................................................................53.3 芯片的选择......................................................................................................53.3.1 STC89C52RC..........................................................................................53．3．1．（2）管脚说明.......................................................................63.3．2 移位寄存器 74HC595 原理..............................................................73.3.3 74LS154 原理...................................................................................94 系统电路的设计..............................................................................................114.1 列驱动电路....................................................................................................114.2 行驱动电路....................................................................................................124.3 仿真................................................................................................................13附录...................................................................................................14附录一 程序设计.................................................................................................14附录...
