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+//Example 7.7, Page Number 334
+//Response time of photodiode
+clc;
+
+it=2*(10**-6) //I-region thickness in metres
+A=(100*(10**-6))*(100*(10**-6)) //Given Area in metres
+lr=50 //Load resistor in ohms
+v=10**5 //Saturation Velocity in Metre/second
+er=12 //relative permittivity of InGaAs
+k=8.85*(10**-12) //Absolute permittivity in farads per meter
+
+t=it/v //Transit Velocity of electrons in m/s
+
+//From equation 7.34
+cj=(A*k*er)/it //cj is the device capacitance in farads
+
+trc=cj*lr //in seconds
+
+total=sqrt((t**2)+(trc**2)) //total is the total response time
+mprintf("The Device Capacitance is:%0.1e F\n",cj)
+mprintf(" The Total response time for the detector is:%.2e s",total)