本文介绍的是一套51系列单片机编程器的设计开发、制作过程 。本文从AT89C51单片机的基本结构和工作原理入手，详细介绍了单片机编程器的工作原理，得到了总体的设计方案。该编程器在硬件实现上，以AT89C51单片机为核心，利用串行口与计算机进行数据的相互传送；软件设计采用C++Builder编写，其Windows界面操作简单易懂。该编程器通用性强，可对AT89C51/52，AT89C2051/2052进行编程，具有简单的仿真功能，而且制作成本十分低廉。-This article describes a set of 51 series programmer design and development, production process. In this paper, the basic structure of AT89C51 microcontroller and principle, a detailed descr iption of the microcontroller programmer works to get the overall design. The programmer on the hardware to AT89C51 microcontroller as the core, the use of the computer serial port for data transfer with each other　software written using C++ Builder, the Windows interface is simple to understand. The programmer versatility, can AT89C51/52, AT89C2051/2052 be programmed with a simple simulation capabilities, and production cost is very low.