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+// Exa 8.2
+
+clc;
+clear;
+
+// Given data
+
+// Astable multivibrator
+Ra=6.8*10^3; // Ω
+Rb=3.3*10^3;  // Ω
+C=0.1*10^-6; // μF
+
+// Solution
+
+disp("By using Eq. (8.11) on page no. 320 we get, tHigh as");
+
+tHigh=0.69*(Ra+Rb)*C; // Time required to charge from 1/3 Vcc to 2/3 Vcc
+printf(' tHIGH = %.1f mSec. \n',tHigh*1000); 
+disp("By using Eq. (8.12) on page no. 320 we get, tLow as");
+
+tLow=0.69*(Rb)*C;  // TIme required to discharge from 2/3 Vcc to 1/3 Vcc
+printf(' tLOw = %.2f mSec. \n',tLow*1000);
+
+disp("By using Eq. (8.13) on page no. 320 we get, free running frequency as");
+f= 1.45/((Ra+2*Rb)*C);
+printf(' f = %.2f kHz. \n\n',f/1000);
+
+D= Rb/(Ra+2*Rb);
+printf(' The duty cycle D = %.2f (%d percent).\n ' ,D,round(D*100));