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The Great 202 Jailbreak - Computerphile

Computerphile

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  • Presented by Professor David Brailsford

Beginner. No background in the topic needed.

531K views12 years ago2 recommendations

History and cultureSystems programmingHistory of computingReverse engineering

Professor David Brailsford explains how a Bell Labs team reverse engineered a Linotron 202 phototypesetter over a summer in 1979.

Before laser-printers, high quality print-outs were the domain of typesetters, expensive and tightly controlled. In 1979 a Bell Labs team reverse engineered one in their summer vacation. Professor Brailsford has the details. EXTRA BITS - More on Printing and Typesetting History: youtube.com/watch?v=HdModNEK_1U Mainframes and the Unix Revolution: youtu.be/-rPPqm44xLs To find out how the 1980 Bell Labs `vacation memo' was completely rebuilt, in 2013, visit: eprg.org/papers/202paper.pdf If you want to see the `vacation memo' itself -- in its original scanned-in form and after being rebuilt -- then visit: cs.princeton.edu/~bwk/202 The memorandum gives an outline of how the `reverse engineering' of the 202 was accomplished. facebook.com/computerphile twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. See the full list of Brady's video projects at: bit.ly/bradychannels

Why it's here

2 people recommend this

What people say. Recommended as a fascinating look into the history of typesetting and early Bell Labs hacking.

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On “Experience with the Mergenthaler Linotron 202 Phototypesetter (1980) [pdf]”

Computerphile interviewed one of the writers of this paper in a series of videos, who explained the brilliant and exiting history of this paper and its recreation, as well as the history of Phototypesetters. 1. link to this video 2. link 3. link

jgalt212on Hacker News • Recommends

On “The Birth of Standard Error (2013)”

> As one might expect, Bell Labs didn't use the paper tape input tangentially related. The Great 202 Jailbreak - Computerphile link to this video staring the inimitable Professor Brailsford.

leocon Hacker News • Mentions

On “The Birth of Unix with Brian Kernighan”

0:16:40 For those who haven't seen it before, there's a Computerphile video link to this video (related video: link ) about the hacking of the typesetting machine, a Mergenthaler Linotron 202. 0:24:31 The photo must be the one at link (probably the webpage, on Dennis Ritchie's old website, that made it famous recently).