摘要:随着电子技术的发展，单片机的发展与运用正在不断的增加与深入，同时也带动传统控制检测技术的日益更新与发展。十字路口交通灯的的控制就可以通过单片机作为核心部件来实现，本设计采用MCS-51系列单片机Intel89C51为中心器件来设计交通灯控制器，运用所学的C51完成交通灯系统软件的编写。通过硬件与软件的结合，结合交通的实际情况阐述了交通灯控制系统的工作原理，给出了一种简单实用的交通灯控制系统的硬件、软件电路设计方案。该系统适用于单主干道的十字路口。

关键词：单片机，交通灯，控制器，设计

Abstract：With the development of electronic technology, the development and application of the microcontroller is constantly increasing and in-depth, but also led to growing renewal and development of the traditional control tests. Crossroads traffic lights control by the microcontroller as the core components of implementation, this design uses the MSC-51 series of microcontrollers the Intel8051 and programmable parallel to the traffic light controller, an excuse to chip in I / O 8255A-centric devices to apply the C51 to complete the preparation of the traffic light system software. Of traffic on the traffic light control system works through a combination of hardware and software, and gives a simple traffic light control system hardware, software, circuit design. The system is suitable for a single main road at the crossroads

Keyword：Microcontroller, traffic lights, controllers, design