窄脉冲发生器-51单片机源程序，该方案是用一片AT89S52与XILINX公司XC9572组成电路，能产生1~1000微妙脉冲宽度，频率100赫兹到99KHz的可调脉宽和频率的脉冲波--51 Single-chip narrow-pulse generator source, the program is an integral AT89S52 with XILINX' s XC9572 circuit, to produce a 1000 subtle pulse width, frequency of 100 Hz to 99KHz adjustable pulse width and pulse frequency