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- 高速DDS系统A High Speed DDS System
- 高速DDSHigh speed DDS
- 在并行DDS系统中，两个DDS的分时输出以及频率的精确接续是实现的难点。 本文用单片机PIC16F874控制DDS的DATA FSK信号很好地解决了这一问题。In the Coordinate DDSs system the time-sharing output and the accurate synthesis of respective output frequency bands are the main problems, which are solved by Micro-processor PIC16F874 controlling the DATA FSK signal.
- 文件系统file systems
- 生态系统ecological system
- 免疫系统immunologic system
- 管理系统managerial system
- 电力系统electric power system
- 神经系统nervous system
- 电脑系统computer system
- 管理信息系统management information system
- 电气系统electrical system
- 排水系统drainage system
- 嵌入式系统embedded system
- 通讯系统communication system
- 泌尿系统urinary system
- 传动系统transmission agent
- 地理信息系统geographical information system
- 管道系统ductwork
- 报警系统panalarm
