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<font face="Times New Roman, Times, Serif" color="#ff0000" size="2">Page
409</font></td>
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<td><font face="Times New Roman, Times, Serif" size="4"><b>Hour 23<br>
The Mandelbrot Set</b></font></td>
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<td><font face="Times New Roman, Times, Serif" size="2"><i>It is
difficult to include trees and coyotes in a bibliography.<br>
�</i>Georgia Johnson</font></td>
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<td><font face="Times New Roman, Times, Serif" size="3">In the preceding
hour, we finished our discussion of Tk graphics and covered the geometry
managers available in Tkinter. In this hour, we apply everything we've
learned in the previous six hours to build a complete application that
allows the calculation and display of Mandelbrot sets and associated
Julia sets.</font></td>
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<td><font face="Times New Roman, Times, Serif" size="3"><b>The
Mandelbrot Set</b></font></td>
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<td><font face="Times New Roman, Times, Serif" size="3">In 1985, the
August <i>Scientific American</i> arrived; many of the engineers where I
worked came in the next morning with some simple Mandelbrot programs,
and by the end of the week nearly everyone had her own program. By
Monday, there was a noticeable sluggishness when trying to get any real
work done on any of the seven company computers (two Vaxen and five
Goulds), caused by the number of Mandelbrot calculations running
simultaneously.</font><font face="Times New Roman, Times, Serif" color="#ffff00" size="3"><!-- break --></font></td>
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<font face="Times New Roman, Times, Serif" color="#ff0000" size="2">Page
410</font></td>
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<td><font face="Times New Roman, Times, Serif" size="3">This scenario
was probably repeated all over the country, although I think our site
had a larger proportion of engineers than most others. At the time, the
best graphics machine I could get my hands on was an Intelecolor
terminal, restricted to downloading at 9600 baud. Even though it took
only five minutes to compute a Mandelbrot on our fastest machine (a
now-extinct Gould NP1), it could take hours to download the resulting
graphic to the display. It was agonizing, and the tube had only eight
colors, anyway. I tried to get the company to spring for an Ethernet
card for my terminal, but my boss said ''No way! I know what you want it
for!" And I could hardly argue with him.</font></td>
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<td><font face="Times New Roman, Times, Serif" size="3">I suspect that
for the first few months after the appearance of that <i>Scientific
American</i> issue, 90% to 95% of our national computing capability was
dedicated to the production of Mandelbrot Set graphics. Now you, too,
although belatedly, can contribute.</font></td>
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24小时学会Python
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2008-07-31
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24小时学会Python （189个子文件） 
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Ch23.htm 281KB Ch16.htm 262KB Ch6.htm 260KB Ch22.htm 241KB Ch8.htm 227KB Ch20.htm 216KB Ch18.htm 187KB Ch13.htm 181KB Ch21.htm 174KB Ch4.htm 170KB Ch11.htm 163KB Ch14.htm 159KB Ch3.htm 156KB Ch10.htm 145KB Ch19.htm 136KB Ch12.htm 128KB Ch7.htm 127KB Ch5.htm 126KB Ch9.htm 119KB Ch17.htm 114KB Ch2.htm 110KB Ch15.htm 106KB Ch24.htm 106KB Ch1.htm 100KB Contents.htm 74KB AppendixD.htm 69KB AppendixC.htm 43KB AppendixB.htm 33KB AppendixA.htm 25KB AppendixE.htm 24KB
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资源评论
ystyseyzy2015-08-30比相关书籍介绍的详细,顶一个
栗子or迷迭香2018-07-30很详细，很不错得资源- songhaiyuntao2012-10-17可用于快速入门，但内容较浅
jack03402017-11-22相关书籍介绍的详细,顶一个- gwdeng2014-12-04内容不多，但是对于初次接触Python的人还是有帮助的
