In this paper it is described the two main architectures of PLD. firstly and then introduced detailedly both structures and functions of Complex Programmable Logic Device(CPLD).

• 简要介绍了PLD的两大类体系结构，深入讨论了复杂可编程逻辑器件CPLD的功能机理及其软硬件开发环境、开发流程。