diff options
Diffstat (limited to 'df_by_f')
-rw-r--r-- | df_by_f/muktesh.ipynb | 101 | ||||
-rw-r--r-- | df_by_f/padmavathi.ipynb | 127 | ||||
-rw-r--r-- | df_by_f/prashanth.ipynb | 601 | ||||
-rw-r--r-- | df_by_f/screenshots/blank1.png | 0 | ||||
-rw-r--r-- | df_by_f/screenshots/blank1_(another_copy).png | 0 | ||||
-rw-r--r-- | df_by_f/screenshots/blank1_(copy).png | 0 | ||||
-rw-r--r-- | df_by_f/screenshots/blank1_(copy)_1.png | 0 | ||||
-rw-r--r-- | df_by_f/screenshots/blank1_1.png | 0 | ||||
-rw-r--r-- | df_by_f/screenshots/blank1_2.png | 0 |
9 files changed, 0 insertions, 829 deletions
diff --git a/df_by_f/muktesh.ipynb b/df_by_f/muktesh.ipynb deleted file mode 100644 index 079c7b6e..00000000 --- a/df_by_f/muktesh.ipynb +++ /dev/null @@ -1,101 +0,0 @@ -{ - "metadata": { - "name": "" - }, - "nbformat": 3, - "nbformat_minor": 0, - "worksheets": [ - { - "cells": [ - { - "cell_type": "heading", - "level": 1, - "metadata": {}, - "source": [ - "Chapter 1: Basic Ideas: Energy Bands in Solids" - ] - }, - { - "cell_type": "heading", - "level": 2, - "metadata": {}, - "source": [ - "Example 1, Page 8" - ] - }, - { - "cell_type": "code", - "collapsed": false, - "input": [ - "import math\n", - "\n", - "#Variable decalaration\n", - "pd = 100 #potential difference, V\n", - "m0=9.11*(10**-31);#m0=rest mass of the electron in kg\n", - "\n", - "#Calculations&Results\n", - "#solving final velocity of the electron\n", - "Ek=1.6*(10**-19)*pd;#Ek=final kinetic energy of electron in Joules\n", - "print \"Final kinetic energy = %.1e J,%.f eV\"%(Ek,Ek*6.242*10**18)\n", - "v=math.sqrt((2*Ek)/m0)#v=final velocity of the electron\n", - "print \"Final velocity = %.3e m/s\"%v" - ], - "language": "python", - "metadata": {}, - "outputs": [ - { - "output_type": "stream", - "stream": "stdout", - "text": [ - "Final kinetic energy = 1.6e-17 J,100 eV\n", - "Final velocity = 5.927e+06 m/s\n" - ] - } - ], - "prompt_number": 1 - }, - { - "cell_type": "heading", - "level": 2, - "metadata": {}, - "source": [ - "Example 2, Page 8" - ] - }, - { - "cell_type": "code", - "collapsed": false, - "input": [ - "import math\n", - "\n", - "#Variable declaration\n", - "m=7360*9.11*(10**-31);#m=mass of the ion in kg\n", - "q=2*1.6*(10**-19);#q=charge of the ion in Coulomb\n", - "V=2000;#V=potential difference in Volt\n", - "\n", - "#Calculations&Results\n", - "#solving velocity & kinetic energy of the ion\n", - "v=math.sqrt((2*q*V)/m)#v=velocity of the ion\n", - "print \"Velocity acquired by the ion = %.3e m/s\"%v\n", - "Ek=(1./2)*m*(v**2)#Ek=kinetic energy of the ion\n", - "print \"Kinetic energy of ion = %.1e J = %.f eV\"%(Ek,Ek*6.242*10**18)" - ], - "language": "python", - "metadata": {}, - "outputs": [ - { - "output_type": "stream", - "stream": "stdout", - "text": [ - "Velocity acquired by the ion = 4.369e+05 m/s\n", - "Kinetic energy of ion = 6.4e-16 J = 3995 eV\n" - ] - } - ], - "prompt_number": 2 - } - ], - "metadata": {} - } - ] -}
\ No newline at end of file diff --git a/df_by_f/padmavathi.ipynb b/df_by_f/padmavathi.ipynb deleted file mode 100644 index 701d2ae5..00000000 --- a/df_by_f/padmavathi.ipynb +++ /dev/null @@ -1,127 +0,0 @@ -<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> -<html><head> -<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> -<title>ERROR: The requested URL could not be retrieved</title> -<style type="text/css"><!-- - /* - Stylesheet for Squid Error pages - Adapted from design by Free CSS Templates - http://www.freecsstemplates.org - Released for free under a Creative Commons Attribution 2.5 License -*/ - -/* Page basics */ -* { - font-family: verdana, sans-serif; -} - -html body { - margin: 0; - padding: 0; - background: #efefef; - font-size: 12px; - color: #1e1e1e; -} - -/* Page displayed title area */ -#titles { - margin-left: 5px; - padding: 10px; - padding-left: 150px; - background: url('http://docs.iitb.ac.in/iitb_logo.jpg') no-repeat left; -} - -/* initial title */ -#titles h1 { - color: #000000; -} -#titles h2 { - color: #000000; -} - -/* special event: FTP success page titles */ -#titles ftpsuccess { - background-color:#00ff00; - width:100%; -} - -/* Page displayed body content area */ -#content { - padding: 10px; - background: #ffffff; -} - -/* General text */ -p { -} - -/* error brief description */ -#error p { -} - -/* some data which may have caused the problem */ -#data { -} - -/* the error message received from the system or other software */ -#sysmsg { -} - -pre { - font-family:sans-serif; -} - -/* special event: FTP / Gopher directory listing */ -#dirlisting tr.entry td.icon,td.filename,td.size,td.date { - border-bottom: groove; -} -#dirlisting td.size { - width: 50px; - text-align: right; - padding-right: 5px; -} - -/* horizontal lines */ -hr { - margin: 0; -} - -/* page displayed footer area */ -#footer { - font-size: 9px; - padding-left: 10px; -} - - -body -:lang(fa) { direction: rtl; font-size: 100%; font-family: Tahoma, Roya, sans-serif; float: right; } -:lang(he) { direction: rtl; } - --></style> -</head><body id=ERR_READ_ERROR> -<div id="titles"> -<h1>ERROR</h1> -<h2>The requested URL could not be retrieved</h2> -</div> -<hr> - -<div id="content"> -<p>The following error was encountered while trying to retrieve the URL: <a href="http://tbc-python.fossee.in/static/Python-Textbook-Companions/sample_notebooks/PADMAVATHITHIYAGARAJAN/Chapter_5.ipynb">http://tbc-python.fossee.in/static/Python-Textbook-Companions/sample_notebooks/PADMAVATHITHIYAGARAJAN/Chapter_5.ipynb</a></p> - -<blockquote id="error"> -<p><b>Read Error</b></p> -</blockquote> - -<p id="sysmsg">The system returned: <i>(104) Connection reset by peer</i></p> - -<p>An error condition occurred while reading data from the network. Please retry your request.</p> - -<p>Your cache administrator is <a href="mailto:webmaster?subject=CacheErrorInfo%20-%20ERR_READ_ERROR&body=CacheHost%3A%20nm11.iitb.ac.in%0D%0AErrPage%3A%20ERR_READ_ERROR%0D%0AErr%3A%20(104)%20Connection%20reset%20by%20peer%0D%0ATimeStamp%3A%20Wed,%2002%20Dec%202015%2009%3A49%3A48%20GMT%0D%0A%0D%0AClientIP%3A%2010.101.11.67%0D%0AServerIP%3A%20tbc-python.fossee.in%0D%0A%0D%0AHTTP%20Request%3A%0D%0AGET%20%2Fstatic%2FPython-Textbook-Companions%2Fsample_notebooks%2FPADMAVATHITHIYAGARAJAN%2FChapter_5.ipynb%20HTTP%2F1.1%0AHost%3A%20tbc-python.fossee.in%0D%0AUser-Agent%3A%20Mozilla%2F5.0%20(X11%3B%20Ubuntu%3B%20Linux%20x86_64%3B%20rv%3A42.0)%20Gecko%2F20100101%20Firefox%2F42.0%0D%0AAccept%3A%20text%2Fhtml,application%2Fxhtml+xml,application%2Fxml%3Bq%3D0.9,*%2F*%3Bq%3D0.8%0D%0AAccept-Language%3A%20en-US,en%3Bq%3D0.5%0D%0AAccept-Encoding%3A%20gzip,%20deflate%0D%0AReferer%3A%20http%3A%2F%2Ftbc-python.fossee.in%2Fproposal-review%2F%0D%0ACookie%3A%20_pk_id.15.f977%3D1205565a2a6c32b7.1448535465.10.1449069234.1449052776.%3B%20_ga%3DGA1.2.63526281.1448535465%3B%20csrftoken%3DOMjtAiQsCv4myz9R3VtGF1B6t2EEDVBb%3B%20sessionid%3Dqnfilway656h8jfx1pmw5ph7gj64798v%3B%20_pk_ses.15.f977%3D*%3B%20_gat%3D1%0D%0AConnection%3A%20keep-alive%0D%0APragma%3A%20no-cache%0D%0ACache-Control%3A%20no-cache%0D%0A%0D%0A%0D%0A">webmaster</a>.</p> -<br> -</div> - -<hr> -<div id="footer"> -<p>Generated Wed, 02 Dec 2015 09:49:48 GMT by nm11.iitb.ac.in (squid/3.3.9)</p> -<!-- ERR_READ_ERROR --> -</div> -</body></html> diff --git a/df_by_f/prashanth.ipynb b/df_by_f/prashanth.ipynb deleted file mode 100644 index 13cd9704..00000000 --- a/df_by_f/prashanth.ipynb +++ /dev/null @@ -1,601 +0,0 @@ -{
- "cells": [
- {
- "cell_type": "markdown",
- "metadata": {},
- "source": [
- "# Chapter 1: Circuit Configuration for Linear Integrated Ciruits"
- ]
- },
- {
- "cell_type": "markdown",
- "metadata": {},
- "source": [
- "###Example 1 Page No:1.81"
- ]
- },
- {
- "cell_type": "code",
- "execution_count": 5,
- "metadata": {
- "collapsed": false
- },
- "outputs": [
- {
- "name": "stdout",
- "output_type": "stream",
- "text": [
- "adm= -1482.0\n",
- "acm= -1.0\n",
- "cmrr= 76.4838188131 db\n"
- ]
- }
- ],
- "source": [
- "#given\n",
- "rc=50000;#ohm\n",
- "re=100000;#ohm\n",
- "rs=10000;#ohm\n",
- "rp=50000;#ohm\n",
- "beta0=2000;\n",
- "r0=400000;#ohm\n",
- "\n",
- "\n",
- "\n",
- "#determine adm,acm,cmrr\n",
- "#calculation\n",
- "rc1=(rc*r0)/(rc+r0);\n",
- "adm=(-(beta0*rc1)/(rs+rp))#differential mode gain\n",
- "acm=(-(beta0*rc1)/(rs+rp+2*re*(beta0+1)))#common mode gain\n",
- "import math\n",
- "cmrr=20*(math.log10((1+((2*re*(beta0+1))/(rs+rp)))))#common mode rejection ratio\n",
- "\n",
- "#result\n",
- "print 'adm=',round(adm,3);\n",
- "print 'acm=',round(acm,3);\n",
- "print 'cmrr=',cmrr,'db'\n"
- ]
- },
- {
- "cell_type": "code",
- "execution_count": null,
- "metadata": {
- "collapsed": true
- },
- "outputs": [],
- "source": []
- },
- {
- "cell_type": "markdown",
- "metadata": {},
- "source": [
- "###Example 2 Page No:1.83"
- ]
- },
- {
- "cell_type": "code",
- "execution_count": 4,
- "metadata": {
- "collapsed": false
- },
- "outputs": [
- {
- "name": "stdout",
- "output_type": "stream",
- "text": [
- "maximum peak amplitude at 100khz 3.185 V\n"
- ]
- }
- ],
- "source": [
- "#given\n",
- "sr=0.000001;#volt/sec\n",
- "freq=100000;\n",
- "vsat=12;\n",
- "baw=100000;\n",
- "#determine vx\n",
- "\n",
- "#calculation\n",
- "vx=2*(1/(sr*2*3.14*freq))\n",
- "\n",
- "#result\n",
- "print 'maximum peak amplitude at 100khz',round(vx,3),'V'\n"
- ]
- },
- {
- "cell_type": "markdown",
- "metadata": {},
- "source": [
- "###Example 3 Page No: 1.84"
- ]
- },
- {
- "cell_type": "code",
- "execution_count": 2,
- "metadata": {
- "collapsed": false
- },
- "outputs": [
- {
- "name": "stdout",
- "output_type": "stream",
- "text": [
- "slew rate= 5 volt/μsec\n"
- ]
- }
- ],
- "source": [
- "#given\n",
- "V=20;\n",
- "t=4;\n",
- "#determine slew rate\n",
- "#calculation\n",
- "w=V/t\n",
- "#result\n",
- "print'slew rate=',w,'volt/μsec'\n"
- ]
- },
- {
- "cell_type": "markdown",
- "metadata": {},
- "source": [
- "###Example 4 Page No: 1.84"
- ]
- },
- {
- "cell_type": "code",
- "execution_count": 3,
- "metadata": {
- "collapsed": false
- },
- "outputs": [
- {
- "name": "stdout",
- "output_type": "stream",
- "text": [
- "max frequency of input is 79617.8343949 hz\n"
- ]
- }
- ],
- "source": [
- "#given\n",
- "a=50;\n",
- "vi=20e-3;\n",
- "sr=0.5e6;\n",
- "#determine max frequency\n",
- "#calculation\n",
- "vm=a*vi;\n",
- "freq=sr/(2*3.14*vm)\n",
- "#result\n",
- "print 'max frequency of input is ',freq,'hz'\n"
- ]
- },
- {
- "cell_type": "markdown",
- "metadata": {},
- "source": [
- "###Example 5 Page No: 1.84"
- ]
- },
- {
- "cell_type": "code",
- "execution_count": 5,
- "metadata": {
- "collapsed": false
- },
- "outputs": [
- {
- "name": "stdout",
- "output_type": "stream",
- "text": [
- "max peak to peak input signal 0.398089171975 V\n"
- ]
- }
- ],
- "source": [
- "#given\n",
- "sr=0.5e6;\n",
- "freq=40e3;\n",
- "a=10;\n",
- "#determine max peak to peak input signal\n",
- "#calculation\n",
- "vm=sr/(2*3.14*freq);\n",
- "vm=2*vm;\n",
- "v1=vm/a\n",
- "#result\n",
- "print'max peak to peak input signal ',v1,'V'\n"
- ]
- },
- {
- "cell_type": "markdown",
- "metadata": {
- "collapsed": true
- },
- "source": [
- "###Example 6 Page No: 1.85"
- ]
- },
- {
- "cell_type": "code",
- "execution_count": 12,
- "metadata": {
- "collapsed": false
- },
- "outputs": [
- {
- "name": "stdout",
- "output_type": "stream",
- "text": [
- "noise 0.0063247 V\n"
- ]
- }
- ],
- "source": [
- "#given\n",
- "adm=400;\n",
- "cmrr=50;\n",
- "vin1=50e-3;\n",
- "vin2=60e-3;\n",
- "vnoise=5e-3;\n",
- "#calculation\n",
- "v0=(vin2-vin1)*adm;\n",
- "acm=adm/316.22;\n",
- "v1=vnoise*acm\n",
- "print'noise ',round(v1,7),'V'\n"
- ]
- },
- {
- "cell_type": "markdown",
- "metadata": {},
- "source": [
- "###Example 7 Page No: 1.86"
- ]
- },
- {
- "cell_type": "code",
- "execution_count": 13,
- "metadata": {
- "collapsed": false
- },
- "outputs": [
- {
- "name": "stdout",
- "output_type": "stream",
- "text": [
- "time to change from 0 t0 15 4e-07 sec\n",
- "slew rate 1.5 volt/μsec\n"
- ]
- }
- ],
- "source": [
- "#given\n",
- "sr=35e6;#volt/sec\n",
- "vsat=15;#volt\n",
- "#determine time to change from 0 to 15V\n",
- "#calculation\n",
- "c=100e-12;#farad\n",
- "i=150e-6;#A\n",
- "w=vsat/sr\n",
- "w1=i/c;\n",
- "#result\n",
- "print'time to change from 0 t0 15 ',round(w,7),'sec'\n",
- "print'slew rate',w1/1000000,'volt/μsec'\n"
- ]
- },
- {
- "cell_type": "markdown",
- "metadata": {},
- "source": [
- "###Example 8 Page No: 1.86"
- ]
- },
- {
- "cell_type": "code",
- "execution_count": 14,
- "metadata": {
- "collapsed": false
- },
- "outputs": [
- {
- "name": "stdout",
- "output_type": "stream",
- "text": [
- "bandwidth 21231.4225053 hz\n"
- ]
- }
- ],
- "source": [
- "#given\n",
- "sr=2e6;#v/sec\n",
- "vsat=15;#volt\n",
- "#determine bandwidth \n",
- "#calculation\n",
- "\n",
- "bw=sr/(2*3.14*vsat)\n",
- "#result\n",
- "print'bandwidth ',bw,'hz'\n"
- ]
- },
- {
- "cell_type": "markdown",
- "metadata": {},
- "source": [
- "###Example 9 Page No: 1.87"
- ]
- },
- {
- "cell_type": "code",
- "execution_count": 15,
- "metadata": {
- "collapsed": false
- },
- "outputs": [
- {
- "name": "stdout",
- "output_type": "stream",
- "text": [
- "output offset 3.0 V\n"
- ]
- }
- ],
- "source": [
- "#given\n",
- "iin=30e-9;#A\n",
- "a=1e5;\n",
- "rin=1000;#ohm\n",
- "#determine output offset voltage\n",
- "#calculation\n",
- "vid=iin*rin;\n",
- "v0=a*vid\n",
- "#result\n",
- "print'output offset ',v0,'V'\n"
- ]
- },
- {
- "cell_type": "markdown",
- "metadata": {},
- "source": [
- "###Example 10 Page No: 1.86"
- ]
- },
- {
- "cell_type": "code",
- "execution_count": 16,
- "metadata": {
- "collapsed": false
- },
- "outputs": [
- {
- "name": "stdout",
- "output_type": "stream",
- "text": [
- "input offset current 4e-06 A\n",
- "input base current 2.4e-05 A\n"
- ]
- }
- ],
- "source": [
- "#given\n",
- "inb1=22e-6;#A\n",
- "inb2=26e-6;#A\n",
- "#determine input offset current input base current\n",
- "#calculation\n",
- "i1=inb2-inb1\n",
- "i2=(inb2+inb1)/2\n",
- "#result\n",
- "print'input offset current ',i1,'A'\n",
- "print'input base current ',i2,'A'\n"
- ]
- },
- {
- "cell_type": "markdown",
- "metadata": {},
- "source": [
- "###Example 11 Page No: 1.86"
- ]
- },
- {
- "cell_type": "code",
- "execution_count": 17,
- "metadata": {
- "collapsed": false
- },
- "outputs": [
- {
- "name": "stdout",
- "output_type": "stream",
- "text": [
- "input base current 8e-08 A\n",
- "input offset current 2e-08 A\n",
- "input offset 2.0 V\n"
- ]
- }
- ],
- "source": [
- "#given\n",
- "inb2=90e-9;#A\n",
- "inb1=70e-9;#A\n",
- "a=1e5;\n",
- "#determine input offset current\n",
- "#calculation\n",
- "i1=(inb2+inb1)/2\n",
- "i2=inb2-inb1\n",
- "v1=((inb2-inb1)*1000)*a\n",
- "print'input base current ',i1,'A'\n",
- "print'input offset current ',i2,'A'\n",
- "print'input offset ',v1,'V'\n"
- ]
- },
- {
- "cell_type": "markdown",
- "metadata": {},
- "source": [
- "###Example 12 Page No: 1.88"
- ]
- },
- {
- "cell_type": "code",
- "execution_count": 19,
- "metadata": {
- "collapsed": false
- },
- "outputs": [
- {
- "name": "stdout",
- "output_type": "stream",
- "text": [
- "output voltage cmrr 100 0.05125 V\n",
- "output voltage cmrr 200 0.050625 V\n",
- "output voltage cmrr 450 0.0502777777778 V\n",
- "output voltage cmrr 105 0.0511904761905 V\n"
- ]
- }
- ],
- "source": [
- "#given\n",
- "vin1=150e-6;#volt\n",
- "vin2=100e-6;#volt\n",
- "a=1000;\n",
- "from array import *\n",
- "cmrr=array('i',[100,200,450,105])\n",
- "#determine output voltage\n",
- "#calculation\n",
- "vc=(vin1+vin2)/2;\n",
- "vd=(vin1-vin2);\n",
- "j=0;\n",
- "while j<=3 :v0=(a*vd*(1+(vc/(cmrr[j]*vd)))) ;print 'output voltage cmrr ',cmrr[j],' ',v0,'V';j=j+1;\n"
- ]
- },
- {
- "cell_type": "markdown",
- "metadata": {},
- "source": [
- "###Example 13 Page No: 1.87"
- ]
- },
- {
- "cell_type": "code",
- "execution_count": 20,
- "metadata": {
- "collapsed": false
- },
- "outputs": [
- {
- "name": "stdout",
- "output_type": "stream",
- "text": [
- "output voltage 0.00316455696203 V\n"
- ]
- }
- ],
- "source": [
- "#given\n",
- "rin=100e3;#ohm\n",
- "rf1=900e3;#ohm\n",
- "vc=1;#volt\n",
- "cmrr=70;\n",
- "#determine the output voltage\n",
- "#calculation\n",
- "v0=(1+(rf1/rin))*vc/3160\n",
- "print 'output voltage ',v0,'V'\n"
- ]
- },
- {
- "cell_type": "markdown",
- "metadata": {},
- "source": [
- "###Example 14 Page No: 1.89"
- ]
- },
- {
- "cell_type": "code",
- "execution_count": 2,
- "metadata": {
- "collapsed": false
- },
- "outputs": [
- {
- "name": "stdout",
- "output_type": "stream",
- "text": [
- "input voltage 0.08 V\n"
- ]
- }
- ],
- "source": [
- "#given\n",
- "sr=0.5e6;#volt/sec\n",
- "a=50;\n",
- "freq=20e3;#hz\n",
- "#determine max peak to peak voltage\n",
- "#calculation\n",
- "v1=sr/(2*3.14*freq*a)\n",
- "print'input voltage ',round(v1,3),'V'\n"
- ]
- },
- {
- "cell_type": "markdown",
- "metadata": {},
- "source": [
- "###Example 15 Page No: 1.90"
- ]
- },
- {
- "cell_type": "code",
- "execution_count": 3,
- "metadata": {
- "collapsed": false
- },
- "outputs": [
- {
- "name": "stdout",
- "output_type": "stream",
- "text": [
- "max frequency 26.5392781316 Khz\n"
- ]
- }
- ],
- "source": [
- "#given\n",
- "sr=50e6;#volt/sec\n",
- "rin=2;\n",
- "vimax=10;\n",
- "#determine max frequency\n",
- "#calculation\n",
- "vm=vimax*(1+rin);\n",
- "freq=sr/(2*3.14*vm)/10e3;\n",
- "print 'max frequency ',freq,'Khz'\n"
- ]
- },
- {
- "cell_type": "code",
- "execution_count": null,
- "metadata": {
- "collapsed": true
- },
- "outputs": [],
- "source": []
- }
- ],
- "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": "2.7.10"
- }
- },
- "nbformat": 4,
- "nbformat_minor": 0
-}
diff --git a/df_by_f/screenshots/blank1.png b/df_by_f/screenshots/blank1.png deleted file mode 100644 index e69de29b..00000000 --- a/df_by_f/screenshots/blank1.png +++ /dev/null diff --git a/df_by_f/screenshots/blank1_(another_copy).png b/df_by_f/screenshots/blank1_(another_copy).png deleted file mode 100644 index e69de29b..00000000 --- a/df_by_f/screenshots/blank1_(another_copy).png +++ /dev/null diff --git a/df_by_f/screenshots/blank1_(copy).png b/df_by_f/screenshots/blank1_(copy).png deleted file mode 100644 index e69de29b..00000000 --- a/df_by_f/screenshots/blank1_(copy).png +++ /dev/null diff --git a/df_by_f/screenshots/blank1_(copy)_1.png b/df_by_f/screenshots/blank1_(copy)_1.png deleted file mode 100644 index e69de29b..00000000 --- a/df_by_f/screenshots/blank1_(copy)_1.png +++ /dev/null diff --git a/df_by_f/screenshots/blank1_1.png b/df_by_f/screenshots/blank1_1.png deleted file mode 100644 index e69de29b..00000000 --- a/df_by_f/screenshots/blank1_1.png +++ /dev/null diff --git a/df_by_f/screenshots/blank1_2.png b/df_by_f/screenshots/blank1_2.png deleted file mode 100644 index e69de29b..00000000 --- a/df_by_f/screenshots/blank1_2.png +++ /dev/null |