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+//=====================================================================================
+//Chapter 16 example 13
+
+clc;clear all;
+
+//variable declaration
+d   = 1;     //1 division is equal to 1 cm
+M    = 0.4;   //mark in cm
+S    = 1.6;   //mark in cm
+A    = 2.15;   //amplitude in cm
+t     = 10;    //time-base control setting in us
+p     = 0.2;       //amplitude control setting 
+
+//calcculations
+R   = M/S;    //mark to space ratio 
+T   = (M+S)*t;       //time for mark and space in divisions
+f    = 1/T;    //pulse in frequency kHz
+P    = A*p;            //magnitude of pule voltage in V
+
+//Result
+mprintf("mark-to-space ratio  = %3.2f",R);
+mprintf("\npulse frequency = %3.2f kHz",f);
+mprintf("\nmagnitude of pulse voltage = %3.2f V",P);
+
+