ISP是指在用户自己设计的目标系统中或印刷电路板上为了重新配置逻辑而对逻辑器件进行反复编程的能力。本文就 ISP器件的优点、结构及应用作了较为详细的论述。 ISP refers to the user-designed target system or on the printed circuit board in order to reconfigure the logic logic and the ability to program repeatedly. In this paper, the advantages of ISP devices, structure and application made a more detailed discussion.