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   "source": [
    "#Chapter 5:Digital Instruments"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Example 5.1,Page No:338"
   ]
  },
  {
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     "text": [
      "frequency of the of the system = 4500.00\n"
     ]
    }
   ],
   "source": [
    "import math\n",
    "\n",
    "#variable declaration\n",
    "N   = 45;      #reading \n",
    "t   = 10*10**-3;      #Gated period in ms\n",
    "\n",
    "#calculations\n",
    "f  = N/float(t);\n",
    "\n",
    "#result\n",
    "print'frequency of the of the system = %3.2f'%f,'Hz';"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Example 5.2,Page No:339"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 16,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Resolution 0.0010\n",
      "Resolution for full scale range of 10V = 0.01 V\n",
      "possible error  = 0.015 V\n"
     ]
    }
   ],
   "source": [
    "import math\n",
    "\n",
    "#variable declaration\n",
    "n     = 3;      #number of full digits on 3 1/2 digit display \n",
    "fs    = 1;      #voltage in V\n",
    "fs1   = 10;     #voltage in V\n",
    "r     = 2;      #voltage reading in V\n",
    "fs3   = 5;\n",
    "\n",
    "#calculation\n",
    "R    = 1/float((10)**n);        #resolution\n",
    "R1   = R*fs;                    #resolution for full scale range of 1V\n",
    "R2   = fs1*R;                    #resolution for full scale range of 10V\n",
    "LSD   =fs3*R;                         #digit in the least siginificant digit in V\n",
    "e    = (((0.5)/float(100))*(r))+LSD;     #total possible error in V\n",
    "\n",
    "#result\n",
    "print'Resolution %3.4f'%R;\n",
    "print'Resolution for full scale range of 10V = %3.2f'%R2,'V';\n",
    "print'possible error  = %3.3f'%e,'V';\n",
    "\n",
    "\n"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "##Example 5.3,Page No:340"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 17,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Resolution = 0.0001 \n",
      "There are 5 digit faces in 4 1/2 digt display ,so 16.95 would be displayed as 16.950\n",
      "Resolution = 0.0001 \n",
      "Hence 0.6564 will be displayed as 0.6564\n",
      "Resolution = 0.0010 \n",
      "Hence 0.6564 will be displayed as 0.656\n"
     ]
    }
   ],
   "source": [
    "import math\n",
    "\n",
    "#variable declaration\n",
    "n   = 4;     #numberof full digits \n",
    "fs  = 1;     #full scale range of 1V\n",
    "fs  = 1;     #full scale range of 10V\n",
    "\n",
    "\n",
    "#calculation\n",
    "R    = 1/float((10)**n);    #resolution\n",
    "R1    = fs*R;      #resolution on 1V in V\n",
    "R2    = fs1*R;      #resolution on 10V in V\n",
    "\n",
    "\n",
    "#result\n",
    "print'Resolution = %3.4f '%R;\n",
    "print'There are 5 digit faces in 4 1/2 digt display ,so 16.95 would be displayed as 16.950';\n",
    "print'Resolution = %3.4f '%R1;\n",
    "print'Hence 0.6564 will be displayed as 0.6564';\n",
    "print'Resolution = %3.4f '%R2;\n",
    "print'Hence 0.6564 will be displayed as 0.656';\n"
   ]
  }
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