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diff --git a/Analog_Integrated_Circuits_by__Pramod_Sharma/Chapter07.ipynb b/Analog_Integrated_Circuits_by__Pramod_Sharma/Chapter07.ipynb
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+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:633401d9dc343504b92f5c6c8c0ce8a9244d452bbc7c55d1a9f47615b5cd01fb"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "Chapter07 : Non-Linear Circuits"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Exa 7.3 : page 326"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from __future__ import division\n",
+      "# given data \n",
+      "VH=4 #in Volt\n",
+      "VSat=13 #in Volt\n",
+      "# Assume R2=10 Kohm\n",
+      "R2=10 #in Kohm\n",
+      "R1=R2/((2*VSat/VH)-1) #in Kohm\n",
+      "print \"Component values are :\" \n",
+      "print \"Value of R1 = %0.2f kohm\" %R1\n",
+      "print \"Value of R2 = %0.2f kohm\" %R2"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Component values are :\n",
+        "Value of R1 = 1.82 kohm\n",
+        "Value of R2 = 10.00 kohm\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Exa 7.4 : page 327"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from __future__ import division\n",
+      "# given data \n",
+      "VSat=13 #in Volt\n",
+      "R1=270 #in ohm\n",
+      "R2=39 #in Kohm\n",
+      "Vut=R1*VSat/(R1+R2*1000) #in Volt\n",
+      "Vlt=R1*(-VSat)/(R1+R2*1000) #in Volt\n",
+      "VH=Vut-Vlt #in Volt\n",
+      "print \"The upper threshold voltage = %0.1f mV\" %(Vut*1000)\n",
+      "print \"The lower threshold voltage = %0.1f mV\" %(Vlt*1000)\n",
+      "print \"Hysteresis voltage = %0.1f mV\" %(VH*1000)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The upper threshold voltage = 89.4 mV\n",
+        "The lower threshold voltage = -89.4 mV\n",
+        "Hysteresis voltage = 178.8 mV\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Exa 7.5 : page 327"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "# given data \n",
+      "VSat=13 #in Volt\n",
+      "Vut=2 #in Volt\n",
+      "Vlt=-1 #in Volt\n",
+      "# Assume R1=10 Kohm\n",
+      "R1=10 #in Kohm\n",
+      "R2=((VSat/Vut)-1)*R1 #in Kohm\n",
+      "R3=((-VSat/Vlt)-1)*R1 #in Kohm\n",
+      "print \"Value of R1 = %0.2f kohm\" %R1\n",
+      "print \"Value of R2 = %0.2f kohm\" %R2\n",
+      "print \"Value of R3 = %0.2f kohm\" %R3"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Value of R1 = 10.00 kohm\n",
+        "Value of R2 = 55.00 kohm\n",
+        "Value of R3 = 120.00 kohm\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
+\ No newline at end of file