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diff --git a/Solid_State_Pulse_Circuits_by_D_A_Bell/13-Bistable_Multivibrators.ipynb b/Solid_State_Pulse_Circuits_by_D_A_Bell/13-Bistable_Multivibrators.ipynb
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+{
+"cells": [
+ {
+		   "cell_type": "markdown",
+	   "metadata": {},
+	   "source": [
+       "# Chapter 13: Bistable Multivibrators"
+	   ]
+	},
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 13.1: Design_a_collector_coupled_bistable_multivibrator.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"//Caption:Design a collector coupled bistable multivibrator\n",
+"//Ex13.1\n",
+"clc;\n",
+"clear;\n",
+"close;\n",
+"V=5//Supply voltage(in volts)\n",
+"Ic=2//Saturated collector current(in mA)\n",
+"Vce=0.2//Collector emitter voltage(in volts)\n",
+"hfe=70\n",
+"Vbe=0.7//Base emitter voltage(in volts)\n",
+"Vbb=-5//Base voltage(in volts)\n",
+"Rc=(V-Vce)/Ic\n",
+"Ib=Ic/hfe\n",
+"Vb1=Vbe-Vbb\n",
+"I2=Ic/10\n",
+"R2=Vb1/I2\n",
+"I2=Vb1/R2\n",
+"R=(V-Vbe)/(I2+Ib)\n",
+"R1=R-Rc\n",
+"disp(Rc,R1,R2,'Components required to design the circuit are resistors(in kilo ohm)=')"
+   ]
+   }
+,
+{
+		   "cell_type": "markdown",
+		   "metadata": {},
+		   "source": [
+			"## Example 13.4: Determine_the_capacitance_for_flip_flop.sce"
+		   ]
+		  },
+  {
+"cell_type": "code",
+	   "execution_count": null,
+	   "metadata": {
+	    "collapsed": true
+	   },
+	   "outputs": [],
+"source": [
+"//Caption:Determine the capacitance for flip flop design and triggering frequency \n",
+"//Ex13.4\n",
+"clc;\n",
+"clear;\n",
+"close;\n",
+"R1=15//Resistor(in kilo ohm)\n",
+"R2=27//Resistor(in kilo ohm)\n",
+"t=250//time(in ns)\n",
+"R=R1*R2/(R1+R2)\n",
+"C=t/(0.1*R)\n",
+"f=10^6/(2.3*C*R)\n",
+"disp(f,C,'Capacitance(in pF) and Frequency(in Khz)=')"
+   ]
+   }
+],
+"metadata": {
+		  "kernelspec": {
+		   "display_name": "Scilab",
+		   "language": "scilab",
+		   "name": "scilab"
+		  },
+		  "language_info": {
+		   "file_extension": ".sce",
+		   "help_links": [
+			{
+			 "text": "MetaKernel Magics",
+			 "url": "https://github.com/calysto/metakernel/blob/master/metakernel/magics/README.md"
+			}
+		   ],
+		   "mimetype": "text/x-octave",
+		   "name": "scilab",
+		   "version": "0.7.1"
+		  }
+		 },
+		 "nbformat": 4,
+		 "nbformat_minor": 0
+}