本文介绍了一种利用软件定时器在AT87C51 单片机上实现多路信号异步采集的实用 技术。详细描述了采集系统的硬件结构、软件流程和通讯机制。 关键字:单片机软件定时器异步信号采集 Technology of Asynchronous Acquisition Based on Single-chip Microcomputer Yun tianyou ,xie yue ,li chao (Institute of Computer Application,China Academy of Engineering Physics,Mianyang,Sichuan 621900) Abstract:This paper introduces a useful method to realize asynchronous acquisition of multi-channel signals on AT87C51 single-chip microcomputer using software timers.The hardware component、software flowchart and communication mechanism is offered in this paper. Keywords :single-chip microcomputer software timers asynchronous acquisition