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+//===========================================================================
+//chapter 9 example 1
+
+clc;clear all;
+
+//variable declaration
+N    = 1500;   //speed of shaft in rm
+T    =120;      //number of teeth on rotator 
+
+//calculatins
+f    = (N/60)*T;    //frequency of output pulses in pulses per second
+
+//result
+mprintf("frequency of output pulses in pulses = %3.2f pulses per second",f);
+