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+// Exa 5.1
+clc;
+clear;
+close;
+format('v',6)
+// Given data
+I_C = 2;// in mA
+I_C =I_C * 10^-3;// in A
+V_CEQ = 20;// in V
+h_fe = 100;
+I_BQ = 20;// in µA
+I_BQ = I_BQ * 10^-6;// in A
+Beta = 100;
+f_T = 50;// in MHz
+f_T = f_T * 10^6;// in Hz
+Cob = 3;// in pF
+Cob = Cob * 10^-12;// in F
+h_ie = 1400;// in ohm
+T = 300;// in K
+// (i) Transconductance
+g_m = 11600*(I_C/T);// in S
+g_m=g_m*10^6;// in µS
+disp(g_m,"The transconductance in µS is");
+// (ii) Input resistance
+g_m=g_m*10^-6;// in S
+r_be = h_fe/g_m; //in ohm 
+disp(r_be,"The input resistance in ohm is");
+// (iii) Capacitance
+Cbc = Cob ;// in F
+Cbe = g_m/(2*%pi*f_T)-Cbc;// in F 
+Cbe= round(Cbe*10^12);// in pF
+disp(Cbe,"The capacitance in pF is");
+// (iv) Base Spreading Resistance
+r_bb = round(h_ie - r_be);// in ohm
+disp(r_bb,"The base spreading resistance in ohm is");