Added(A)/Deleted(D) following books

 A  Fundamentals_Of_Electronic_Devices_by_J._B._Gupta/Ch1.ipynb
A  Fundamentals_Of_Electronic_Devices_by_J._B._Gupta/Ch2.ipynb
A  Fundamentals_Of_Electronic_Devices_by_J._B._Gupta/Ch3.ipynb
A  Fundamentals_Of_Electronic_Devices_by_J._B._Gupta/Ch4.ipynb
A  Fundamentals_Of_Electronic_Devices_by_J._B._Gupta/Ch5.ipynb
A  Fundamentals_Of_Electronic_Devices_by_J._B._Gupta/Ch6.ipynb
A  Fundamentals_Of_Electronic_Devices_by_J._B._Gupta/Ch7.ipynb
A  Fundamentals_Of_Electronic_Devices_by_J._B._Gupta/Ch8.ipynb
A  Fundamentals_Of_Electronic_Devices_by_J._B._Gupta/README.txt
A  Fundamentals_Of_Electronic_Devices_by_J._B._Gupta/screenshots/6.1.png
A  Fundamentals_Of_Electronic_Devices_by_J._B._Gupta/screenshots/6.png
A  Fundamentals_Of_Electronic_Devices_by_J._B._Gupta/screenshots/7.png
A  OpAmps_And_Linear_Integrated_Circuits_by_Gayakwad/Chapter1.ipynb
A  OpAmps_And_Linear_Integrated_Circuits_by_Gayakwad/Chapter2.ipynb
A  OpAmps_And_Linear_Integrated_Circuits_by_Gayakwad/Chapter3.ipynb
A  OpAmps_And_Linear_Integrated_Circuits_by_Gayakwad/Chapter4.ipynb
A  OpAmps_And_Linear_Integrated_Circuits_by_Gayakwad/Chapter5.ipynb
A  OpAmps_And_Linear_Integrated_Circuits_by_Gayakwad/Chapter6.ipynb
A  OpAmps_And_Linear_Integrated_Circuits_by_Gayakwad/Chapter7.ipynb
A  OpAmps_And_Linear_Integrated_Circuits_by_Gayakwad/Chapter8.ipynb
A  OpAmps_And_Linear_Integrated_Circuits_by_Gayakwad/Chapter9.ipynb
A  OpAmps_And_Linear_Integrated_Circuits_by_Gayakwad/README.txt
A  OpAmps_And_Linear_Integrated_Circuits_by_Gayakwad/screenshots/1.png
A  OpAmps_And_Linear_Integrated_Circuits_by_Gayakwad/screenshots/2.png
A  OpAmps_And_Linear_Integrated_Circuits_by_Gayakwad/screenshots/8.png
A  Principles_of_Electronics_____by_V.K._Mehta_and_Rohit_Mehta/chapter10_6.ipynb
A  Principles_of_Electronics_____by_V.K._Mehta_and_Rohit_Mehta/chapter11_6.ipynb
A  Principles_of_Electronics_____by_V.K._Mehta_and_Rohit_Mehta/chapter12_6.ipynb
A  Principles_of_Electronics_____by_V.K._Mehta_and_Rohit_Mehta/chapter13_6.ipynb
A  Principles_of_Electronics_____by_V.K._Mehta_and_Rohit_Mehta/chapter14_6.ipynb
A  Principles_of_Electronics_____by_V.K._Mehta_and_Rohit_Mehta/chapter15_6.ipynb
A  Principles_of_Electronics_____by_V.K._Mehta_and_Rohit_Mehta/chapter16_6.ipynb
A  Principles_of_Electronics_____by_V.K._Mehta_and_Rohit_Mehta/chapter17_6.ipynb
A  Principles_of_Electronics_____by_V.K._Mehta_and_Rohit_Mehta/chapter18_6.ipynb
A  Principles_of_Electronics_____by_V.K._Mehta_and_Rohit_Mehta/chapter19_6.ipynb
A  Principles_of_Electronics_____by_V.K._Mehta_and_Rohit_Mehta/chapter1_6.ipynb
A  Principles_of_Electronics_____by_V.K._Mehta_and_Rohit_Mehta/chapter20_6.ipynb
A  Principles_of_Electronics_____by_V.K._Mehta_and_Rohit_Mehta/chapter21_6.ipynb
A  Principles_of_Electronics_____by_V.K._Mehta_and_Rohit_Mehta/chapter22_6.ipynb
A  Principles_of_Electronics_____by_V.K._Mehta_and_Rohit_Mehta/chapter23_6.ipynb
A  Principles_of_Electronics_____by_V.K._Mehta_and_Rohit_Mehta/chapter24_6.ipynb
A  Principles_of_Electronics_____by_V.K._Mehta_and_Rohit_Mehta/chapter25_6.ipynb
A  Principles_of_Electronics_____by_V.K._Mehta_and_Rohit_Mehta/chapter26_6.ipynb
A  Principles_of_Electronics_____by_V.K._Mehta_and_Rohit_Mehta/chapter2_6.ipynb
A  Principles_of_Electronics_____by_V.K._Mehta_and_Rohit_Mehta/chapter6_6.ipynb
A  Principles_of_Electronics_____by_V.K._Mehta_and_Rohit_Mehta/chapter7_6.ipynb
A  Principles_of_Electronics_____by_V.K._Mehta_and_Rohit_Mehta/chapter8_6.ipynb
A  Principles_of_Electronics_____by_V.K._Mehta_and_Rohit_Mehta/chapter9_6.ipynb
A  Principles_of_Electronics_____by_V.K._Mehta_and_Rohit_Mehta/screenshots/chapter10_ac_load_line_5.png
A  Principles_of_Electronics_____by_V.K._Mehta_and_Rohit_Mehta/screenshots/chapter18_clipping_ckt_output_6.png
A  Principles_of_Electronics_____by_V.K._Mehta_and_Rohit_Mehta/screenshots/chapter8_dc_load_line_6.png

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+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Chapter 1:Semiconductor Marerials and Crystal Properties"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "### Example 1.1 Page No.23"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Miller indices of the given plane are 3.0 2.0 3.0\n"
+     ]
+    }
+   ],
+   "source": [
+    "#Example 1.1\n",
+    "#Find the miller indices for a plane.\n",
+    "\n",
+    "#Given\n",
+    "#Length of intercept\n",
+    "l1=2.0\n",
+    "l2=3.0\n",
+    "l3=2.0\n",
+    "\n",
+    "#Calcuation\n",
+    "#reciprocal of intercept\n",
+    "r1=1/l1\n",
+    "r2=1/l2\n",
+    "r3=1/l3\n",
+    "m1=6*r1\n",
+    "m2=6*r2\n",
+    "m3=6*r3\n",
+    "\n",
+    "#Result\n",
+    "print\"Miller indices of the given plane are\",m1,m2,m3\n"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "### Example 1.2 Page No.24"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 6,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Miller indices of the given plane are 2.0 1.0 0\n"
+     ]
+    }
+   ],
+   "source": [
+    "#Example 1.2\n",
+    "#Find the miller indices for a plane.\n",
+    "\n",
+    "#Given\n",
+    "#Length of intercept\n",
+    "l1=1.0\n",
+    "l2=2.0\n",
+    "l3=0\n",
+    "\n",
+    "#Calcuation\n",
+    "#reciprocal of intercept\n",
+    "r1=1/l1\n",
+    "r2=1/l2\n",
+    "r3=0\n",
+    "m1=2*r1\n",
+    "m2=2*r2\n",
+    "m3=2*r3\n",
+    "\n",
+    "#Result\n",
+    "print\"Miller indices of the given plane are\",m1,m2,m3\n"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "### Example 1.3 Page No.24"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 17,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Lattice constant is 3.22 A\n",
+      "radius of simple lattice is 1.61 A\n"
+     ]
+    }
+   ],
+   "source": [
+    "#Example 1.3\n",
+    "#Obtain lattice constant and radius of the atom.\n",
+    "\n",
+    "#Given\n",
+    "V=3*(10**22)                 #kg/m**3, density of SCC lattice\n",
+    "p=(1/3.0)*10**-22\n",
+    "\n",
+    "#Calculation\n",
+    "n=1                       #no. of lattice point     \n",
+    "a=(n*p)**(1/3.0)                     #lattice constant\n",
+    "r=(a*10**8/2)\n",
+    "\n",
+    "#Result\n",
+    "print\"Lattice constant is\",round(a*10**8,2),\"A\"\n",
+    "print\"radius of simple lattice is\",round(r,2),\"A\""
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "### Example 1.4 Page no.25"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 18,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Density of crystal is 8928.8 Kg/m**3\n"
+     ]
+    }
+   ],
+   "source": [
+    "#Exampe  1.4\n",
+    "#Determine the density of crystal\n",
+    "\n",
+    "#given data\n",
+    "import math\n",
+    "r=1.278                      #in Angstrum\n",
+    "AtomicWeight=63.5            #constant\n",
+    "AvogadroNo=6.023*10**23      #constant\n",
+    "\n",
+    "#Calculation\n",
+    "#For FCC structure a=4*r/math.sqrt(2)\n",
+    "a=4*r*10**-10/math.sqrt(2)   #in meter\n",
+    "V=a**3                       #in meter**3\n",
+    "#mass of one atom = m\n",
+    "m=AtomicWeight/AvogadroNo    #in gm\n",
+    "m=m/1000                     #in Kg\n",
+    "n=4          # no. of atoms per unit cell for FCC structure\n",
+    "rho=m*n/V                    #in Kg/m**3\n",
+    "\n",
+    "#Result\n",
+    "print \"Density of crystal is\",round(rho,2),\"Kg/m**3\""
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "### Example 1.5 Page no.26"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 19,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Density of silicon crystal is 1249.0 Kg/m**3\n"
+     ]
+    }
+   ],
+   "source": [
+    "#Example 1.5\n",
+    "#What is Density of silicon crystal .\n",
+    "\n",
+    "#given data\n",
+    "n=4                     # no. of atoms per unit cell of silicon\n",
+    "AtomicWeight=28         #constant\n",
+    "AvogadroNo=6.021*10**23 #constant\n",
+    "\n",
+    "#calculation\n",
+    "m=AtomicWeight/AvogadroNo  #in gm\n",
+    "m=m/1000                   #in Kg\n",
+    "a=5.3                      #lattice constant in Angstrum\n",
+    "a=a*10**-10                #in meter\n",
+    "V=a**3                     #in meter**3\n",
+    "rho=m*n/V                  #in Kg/m**3\n",
+    "\n",
+    "#result\n",
+    "print\"Density of silicon crystal is\",round(rho,0),\"Kg/m**3\""
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "### Example 1.6 Page no.26"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Surface density in FCC on (111)Plane is %.e 1.02382271468e+13 atoms/mm**2\n"
+     ]
+    }
+   ],
+   "source": [
+    "#Example 1.5\n",
+    "#What is Surface density in FCC .\n",
+    "\n",
+    "#given data\n",
+    "a=4.75                     #lattice constant in Angstrum\n",
+    "a=a*10**-10                #in meter\n",
+    "\n",
+    "#Calculation\n",
+    "dp=2.31/a**2               #in atom/m**2\n",
+    "dp=dp/10**6                #in atom/mm**2\n",
+    "\n",
+    "#Result\n",
+    "print \"Surface density in FCC on (111)Plane is %.e\",dp,\"atoms/mm**2\""
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "### Example 1.7 Page no. 28"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 28,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Interpolar distance in Angstrum  2.01 A\n"
+     ]
+    }
+   ],
+   "source": [
+    "#Example 1.7\n",
+    "#find the Interpolar distance\n",
+    "\n",
+    "#given data\n",
+    "import math\n",
+    "l=1.539         #in Angstrum\n",
+    "theta=22.5           #in degree\n",
+    "n=1                  #order unitless\n",
+    "\n",
+    "#Calculation\n",
+    "d=n*l/(2*math.sin(theta*math.pi/180))    #in Angstrum\n",
+    "\n",
+    "#result\n",
+    "print \"Interpolar distance in Angstrum \",round(d,2),\"A\""
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "### Example 1.8 Page no. 28"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 4,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "wavelength of X-rays in Angstrum  0.584 A\n"
+     ]
+    }
+   ],
+   "source": [
+    "#Example 1.8\n",
+    "#Find the wavelength of X-rays \n",
+    "\n",
+    "#given data\n",
+    "import math\n",
+    "\n",
+    "theta=16.8/2.0             #in degree\n",
+    "n=2.0                      #order unitless\n",
+    "d=0.4                    #in nm\n",
+    "\n",
+    "#Calculation\n",
+    "l=(2*d*10**-9*sin(theta*math.pi/180.0))/n     #in Angstrum\n",
+    "\n",
+    "#result\n",
+    "print \"wavelength of X-rays in Angstrum \",round(l*10**10,3),\"A\"\n"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 2",
+   "language": "python",
+   "name": "python2"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 2
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython2",
+   "version": "2.7.6"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 0
+}