基于单片机计数器课程设计.doc

湖 南 科 技 大 学摘 要 本设计是根据我们所学习的单片机课程，按照课程要求进行的课程检验。单片机技术是一个不可或缺的技术，尤其是对于我们测控技术与仪器专业来说它是我们必须要掌握的技能之一，使我们未来工作和生活的根本。现在的社会是一个信息科技高速发展的社会，也是一个电子技术和微机计算机迅速发展的时代，单片机的档次和水平在不断的提高，其应用的领域和范围也越来越广，成为现代电子系统中最重要的智能化核心部分。 随着计数器技术的不断发展与进步，计数器的种类越来越多，应用的范围越来越广，随之而来的竞争也越来越激烈。过硬的技术也成为众多生产厂商竞争的焦点之一。厂商为了在竞争中处于不败之地，从而不断地改进技术，增加产品的种类现计数器的种类以增加到：电磁计数器、电子计数器、机械计数器（拉动机械计数器、转动机械计数器、按动机械计数器、测长机械计数器）、液晶计数器等。计数器的应用范围也遍布印刷、纺织、印染、针织、电缆、电讯、军工、轻工、机械、开关、断路器、矿山、实行多班制的纺织行业的织布机、织带机、制线、制带、造纸、制革、薄膜、高压开关电器产品、试验设备，印刷设备、短路器、医疗、纺织、机械、仓库和码头的货运、行人及车辆过往的数量计数、冶金、食品、国防、包装、配料、石油、化工、发电、机床、仪表、自动化控制等行业。 1.1 系统设计的要求及主要内容应解决的问题····························1 第二章 方案论证····················································2 2.1 设计方案选择····················································2 2.2 设计原理························································2 第三章 系统硬件电路设计··········································4 3.1 最小系统设计····················································4 3.2 原理图··························································6 3.3 电路仿真························································8 第四章 系统程序设计···············································9 4.1 系统软件设计流程图··············································9 4.2 程序····························································9 第五章 调试及性能分析 ···········································13 5.1 系统性能测试与功能说明·········································13 5.2 软件调试问题及解决·············································13 参 考 文 献·······················································14 附录A 仿真电路··················································· 15 附录B 原理电路··················································· 16 附录C 实物照片··················································· 17 第一章 系统的功能要 1.1 系统设计的要求及主要内容应解决的问题 要求： 1.整个系统有较强的抗干扰能力计数范围：00~9999 3.将计数值显示出来AT89S52单片机来制作一个手动计数器，在AT89S52单片机的P3.7管脚接一个轻触开关，作为手动计数的按钮，用单片机的P3.4-3.7接一个四位共阴数码管，作为位数选择，P0作为000-255计数的显示。 系统板上硬件连线： 1）把“单片机系统”区域中的P0.0/AD0－P0.7/AD7端口用排线连接到“四路静态数码显示模块”区域中的任一个a－h端口上；要求：P0.0/AD0对应着a，P0.1/AD1对应着b，……，P0.7/AD7对应着h。 2）把“单片机系统”区域中的P3.