摘要
介绍了用单片机STC89C51实现智能频率测量的方法,采用硬件逻辑与软件指令巧妙配合的智能阐门控制方式,可实现0100MHz范围内等精度测量功能,精度可达10-7。同时系统采用新器件ZLG7290扩展I/O端口,实现键盘控制及数码管显示。
Intelligent frequency measurement methods achieved by STC89C51 single-chip are introduced, adopt the intelligent strobe controlling way by means of the cooperation of hardware logic and instructions. This product whose precision is 10-7 can realize the functions of equal prec-ision measurement in the range of 0-170MHz.A new device ZLG7290 is used to extended I/O port in this system, keyboard control and LED display are realized.
出处
《中国仪器仪表》
2007年第8期46-48,62,共4页
China Instrumentation
