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Xerox Alto Designer, Co-Inventor Of Ethernet, Dies at 74 (arstechnica.com)

An anonymous reader quotes Ars Technica: Charles Thacker, one of the lead hardware designers on the Xerox Alto, the first modern personal computer, died of a brief illness on Monday. He was 74. The Alto, which was released in 1973 but was never a commercial success, was an incredibly influential machine... Thomas Haigh, a computer historian and professor at the University of Wisconsin, Milwaukee, wrote in an email to Ars, "Alto is the direct ancestor of today's personal computers. It provided the model: GUI, windows, high-resolution screen, Ethernet, mouse, etc. that the computer industry spent the next 15 years catching up to. Of course others like Alan Kay and Butler Lampson spent years evolving the software side of the platform, but without Thacker's creation of what was, by the standards of the early 1970s, an amazingly powerful personal hardware platform, none of that other work would have been possible."
In 1999 Thacker also designed the hardware for Microsoft's Tablet PC, "which was first conceived of by his PARC colleague Alan Kay during the early 1970s," according to the article. "I've found over my career that it's been very difficult to predict the future," Thacker said in a guest lecture in 2013. "People who tried to do it generally wind up being wrong."

96 comments

  1. RIP. by Anonymous Coward · · Score: 0

    I am only passingly familiar with the man, but I suppose he was that generation's Elon Musk.

    1. Re:RIP. by Anonymous Coward · · Score: 1

      I met him once. He was friends with the CEO of the company I worked for back around 2003-ish. Interesting man with lots of stories about PARC.

    2. Re:RIP. by Anonymous Coward · · Score: 0

      May I insert my fetid penis in your rotting asshole?

    3. Re: RIP. by Anonymous Coward · · Score: 0

      Jerk have respect for the dead even if you don't like them. Now go die in a fire.

    4. Re: RIP. by Anonymous Coward · · Score: 0

      Jerk have respect for the dead even if you don't like them. Now go die in a fire.

      OK, dying in a fire. Hahaha you idiot! Now you have to respect me because I'm dead!!

    5. Re: RIP. by Anonymous Coward · · Score: 0

      No. It's not as if the dead person will ever know or care.

      I bet this guy was also a secret kiddy porn watcher.

    6. Re:RIP. by Anonymous Coward · · Score: 2, Interesting

      No. Elon Musk isn't anything like Charles Thacker. Thacker was an inspired inventor, designer and engineer.

      Musk just throws money behind generic ideas that have tons of prior art. This is much like Steve Jobs, Larry Ellison, Jeff Bezos and others of that ilk -- they are good at monetizing and marketing, but they are not very creative.

    7. Re:RIP. by Anonymous Coward · · Score: 1

      But they make products that people want to own and use. On the other hand, Thacker created shit that no one wanted but nerds furiously jack off their micropeens over.

    8. Re: RIP. by Anonymous Coward · · Score: 0

      He was a perverted pedophile who raped preteen goys.

    9. Re: RIP. by Anonymous Coward · · Score: 0

      You're not dead until you stop replying to this post until then keep burning in that fire

    10. Re: RIP. by Anonymous Coward · · Score: 0

      Respect my dead roasted[NO CARRIER]

    11. Re: RIP. by K.+S.+Kyosuke · · Score: 1

      Musk is somewhere in the middle between the two extremes. Comparing him to Jobs is highly disingenuous.

      --
      Ezekiel 23:20
    12. Re:RIP. by unixisc · · Score: 1

      More precisely, Musk gets government to heavily subsidize his companies, particularly SpaceX. That's very different from what people like Thacker used to do

      RIP, Mr Thacker

    13. Re:RIP. by unixisc · · Score: 1

      So how many people use SpaceX? Even for the Tesla - how many people prefer that to the Toyotas or Hondas?

    14. Re:RIP. by Anonymous Coward · · Score: 1

      Hey, 12-year-old. Get a sense of history and origin.

      The windows and icons and on your smartphone and Ipad were conceived by Thacker and his PARC coworkers, while clicking on them was enabled by earlier inventors such as Ralph Benjamin and Douglas Engelbart.

      Without these Jobs, Ellison, Bezos and Musk would have been selling something else, and you would be angering your parents by hogging the household phone chattering with other preteens.

    15. Re:RIP. by squiggleslash · · Score: 1

      But Musk invented the Hyperloop! The Hyperloop! The single greatest form of transportation that'll never exist and would be totally shit if it really happened but gives NIMBYs a FUD strategy to help them kill HSR proposals!

      --
      You are not alone. This is not normal. None of this is normal.
    16. Re: RIP. by Anonymous Coward · · Score: 0

      So you have respect for Hitler you racist fuck?

    17. Re: RIP. by Anonymous Coward · · Score: 0

      Musk is not an inventor. Everything he has produced was conceived by someone else at least a decade before he started.

    18. Re:RIP. by Anonymous Coward · · Score: 0

      Musk most definitely did not invent the Hyperloop! That idea appeared in the 1980s in an issue of Popular Science/Mechanics.

    19. Re: RIP. by Anonymous Coward · · Score: 0

      Well, yeah. Hitler accomplished more than Thacker ever could.

    20. Re: RIP. by Anonymous Coward · · Score: 0

      Musk is not an inventor by any stretch of the concept. Everything generic that he has sold was conceived by others at least a decade prior to Musk's release of the item.

      This scenario is very similar to that of Jobs, except perhaps that Jobs was more maniacal/bullying.

    21. Re:RIP. by Anonymous Coward · · Score: 0

      elon spends most of his time on actual engineering, not sales or marketing. you've read too many content farm articles.

    22. Re:RIP. by Anonymous Coward · · Score: 0

      And without them, those things would have faded into obscurity. Relegated to the dustbin of history.

    23. Re:RIP. by Anonymous Coward · · Score: 0

      Way to gloss over the part about Jobs and Bezos. Founders of two of the largest companies on Earth with 100s of millions of customers worldwide apiece.

    24. Re: RIP. by Anonymous Coward · · Score: 0

      So you respect Ted Bundy, Vladmir Lenin, Chairman Mao and Polpot?

    25. Re:RIP. by Anonymous Coward · · Score: 0

      Not really. At any rate, he didn't invent any of the things that he has "released."

    26. Re:RIP. by Anonymous Coward · · Score: 0

      Large companies does not equate innovation. In fact, it is usually quite the opposite -- the smaller outfits are frequently the most innovative.

    27. Re:RIP. by Anonymous Coward · · Score: 0

      No.

      Other companies were already offering the same things before Jobs, Ellison, Bezos, Musk (and Gates).

      Do you really believe that the WIMP (windows, icons, mouse, pointer) paradigm would have faded into obscurity without Jobs and Gates?

    28. Re: RIP. by plopez · · Score: 1

      I'd rather eye fuck them. But respectfully. With cuddling.

      --
      putting the 'B' in LGBTQ+
    29. Re:RIP. by plopez · · Score: 1

      That's why large companies buy them. Risk free innovation

      --
      putting the 'B' in LGBTQ+
    30. Re: RIP. by dougdonovan · · Score: 1

      ditto on RIP

    31. Re:RIP. by Anonymous Coward · · Score: 1

      at least he's not this fucking tool: https://arstechnica.com/tech-policy/2017/06/shivas-war-one-mans-quest-to-convince-the-world-that-he-invented-e-mail/

    32. Re: RIP. by K.+S.+Kyosuke · · Score: 1

      Virtually everything that has ever been invented had been conceived by somebody else before. Try again. :-p

      --
      Ezekiel 23:20
    33. Re: RIP. by K.+S.+Kyosuke · · Score: 1

      Ideas are cheap, though. That's why your statement applies to all inventors. Falcon 9 might not be the first design geared for unified serial production to have ever been conceived - see OTRAG, for example - but it's the first one to have actually taken off, so as to speak.

      --
      Ezekiel 23:20
    34. Re:RIP. by K.+S.+Kyosuke · · Score: 1

      Maybe you should cite it. Vactrains were known as a concept back then, but the original hyperloop concept was not a vactrain. (It seems to have sort of turned into one, though.)

      --
      Ezekiel 23:20
  2. Only 74 by Anonymous Coward · · Score: 0

    Man! People are dying young these days!

  3. Re: Sad, but... by Anonymous Coward · · Score: 0

    Massive connector? Are you kidding me?

  4. There's this amazing series of videos by 50000BTU_barbecue · · Score: 4, Informative
    --
    Mostly random stuff.
  5. Re: Sad, but... by Anonymous Coward · · Score: 3, Informative

    The Ethernet AUI interface was DB15, and the other side of the transceiver was a vampire tape into coaxial cable. Ethernet over twisted pair came much later, and it was based on existing telephone cable and connectors.

  6. Good man by 110010001000 · · Score: 2

    We graduated college together. Always a nice guy.

    1. Re:Good man by iggymanz · · Score: 1

      you're funny AC, like anyone even gives a crap about YOU here while you're alive! hahahahaha

    2. Re:Good man by Anonymous Coward · · Score: 0

      I love me I love me
      I'm as great as I can be
      With no name and a shit post history
      I'm loving loving me

    3. Re:Good man by Anonymous Coward · · Score: 0

      Says the pedophile whacking it to his loli backgrounds.

  7. Re: Sad, but... by iggymanz · · Score: 3, Insightful

    that first version could go up to 500 meters before repeater needed, tell me how far your twisted pair can go

  8. Predicting the Future is Easy by pubwvj · · Score: 1

    "I've found over my career that it's been very difficult to predict the future," Thacker said in a guest lecture in 2013. "People who tried to do it generally wind up being wrong."

    Oh, come now. Predicting the future is easy. The future will be just like the present but different. See, easy-peasy.

  9. Silly Valley hypsters by Anonymous Coward · · Score: 0

    Hey, Silly Valley hypsters! HE was an innovative genius. He just wasn't so famous because he didn't have a publicist keeping his name out there all the time.

    It's aggravating seeing much lesser talents become billionaires while people like Thacker stay in relative obscurity.

    1. Re:Silly Valley hypsters by Anonymous Coward · · Score: 0

      If only fame had an I.V., baby could I bear
      Being away from you, I found the vein, put it in here

    2. Re: Silly Valley hypsters by Anonymous Coward · · Score: 0

      People that matter knew him, and sought his advice. I had the pleasure of having him as an advisor, briefly, to me on one of my companies.

      I could say I regret not having spent enough time to get to know him better, but I was busy and of course so was he... and that is of course how these things go. I'm priveldged to have had the interactions I did have.

  10. Those Brief illnesses will kill you every time. by Anonymous Coward · · Score: 0

    Google it!

  11. Re: Sad, but... by Anonymous Coward · · Score: 0

    Compared to your's and Trump's micropenises? Yeah, it's yuge!

  12. Ethernet and Robert Metcalf by woboyle · · Score: 4, Interesting

    The co-inventor of ethernet at PARC, Robert Metcalf, has been a friend of mine for 35 years. My sympathies to Thacker's family for their loss. I never knew him although I may have met him in the early 1980's in the Silicon Valley. As a commercial computer sales rep in the Valley back then I sold Robert the first 100 IBM PC's for his startup, 3-com. When I was an engineer in Boston in the late 1980's and early 1990's we would meet for dinner before IEEE meetings.

    --
    Sometimes, real fast is almost as good as real-time.
    1. Re:Ethernet and Robert Metcalf by unixisc · · Score: 1

      I used to read Bob Metcalfe's articles in InfoWorld. They used to be some of the most insightful opinions in that magazine.

    2. Re:Ethernet and Robert Metcalf by woboyle · · Score: 1

      So did I, and I agree.

      --
      Sometimes, real fast is almost as good as real-time.
    3. Re:Ethernet and Robert Metcalf by Anonymous Coward · · Score: 0

      What would the computer world have done without the Alto? Would the Mother Of All Demos been enough? I really don't think so...

      The Alto showed the way. The Alto contained the entire WIMP user interface. Without the Alto there is no 0.0.0.0 moment or system in the GUI world.

      Much respect for PARC and Robert Thacker.

  13. Re: Sad, but... by Anonymous Coward · · Score: 1

    that first version could go up to 500 meters before repeater needed, tell me how far your twisted pair can go

    It can go up to 10Gbps.

    Any other questions?

    (PARC alumnus here)

  14. ethernet by unixisc · · Score: 1

    On the firmware side of things, I wish he had made the Ethernet Mac address 64 bits instead of 48.

    1. Re:ethernet by Anonymous Coward · · Score: 0

      281474976710656 isn't enough for you.

    2. Re:ethernet by Anonymous Coward · · Score: 0

      We have this now, EUI64

    3. Re:ethernet by glitch! · · Score: 1

      On the firmware side of things, I wish he had made the Ethernet Mac address 64 bits instead of 48.

      Your opinion interests me. Could you go further? If I remember right, the numbering registry assigns a block of 24 bits (16M each) and very large manufacturers just buy more blocks as needed. I am sure that a lot of startups will buy a block and only sell a fraction (I was involved with one), but that does leave 16M blocks to sell. Wow, that's a lot. And I think it is likely that some rogue vendors steal blocks, just thinking the odds are miniscule that any customer will see an ARP conflict.

      Maybe you are looking at the cost of a modern processor loading, masking, and doing small-endian conversion based on 48 bits versus 64 bits? Yes, there are a few more machine instructions there, but... Didn't we stop worrying about the cost per packet (well, frame) some years ago? The modern CPU is so capable, it could maybe do ATM AAL5 in software and we would not notice the overhead.

      --
      A dingo ate my sig...
    4. Re:ethernet by unixisc · · Score: 1

      You mentioned that very large manufacturers buy up variable length blocks. My idea here was having out of 64 bits, say 8 bits (to allow for 256 ethernet manufacturers worldwide) to have a constant block of addresses. Which they could assign according to their product lines. I don't know if 802.11 shares the same MAC addressing schemes as 802.3, but a company that made both Ethernet and WiFi parts could use different internal schemes to identify the parts. It would also have made autoconfiguration more automatic, as opposed to having EUI-64 (which inserts 0xfffe in the middle), and the end result would have been MAC addresses being more reliably unique than what it is now.

      I wasn't thinking so much about the endian conversions or any of that. As it is, EUI-64 in IPv6 is only used in link-local addresses (on this TrueOS system that I'm using). Usually, they'll either use Privacy Extensions, which is what Windows uses, or they'd use RAs. So no, I wasn't thinking about the CPU trying to align 48 bits and 64 bits.

  15. Re: Sad, but... by Anonymous Coward · · Score: 0

    that first version could go up to 500 meters before repeater needed, tell me how far your twisted pair can go

    100 meters

    It can go up to 10Gbps.

    Any other questions?

    (PARC alumnus here)

    Fuck?! You?!

  16. co-inventor by aquabat · · Score: 1

    Did they have to say "co-inventor" because of that Al Gore thing?

    --
    A republic cannot succeed till it contains a certain body of men imbued with the principles of justice and honour.
    1. Re:co-inventor by aquabat · · Score: 1

      ugh. I need to read more carefully before trying to be a smartass. Cancel my last.

      --
      A republic cannot succeed till it contains a certain body of men imbued with the principles of justice and honour.
    2. Re:co-inventor by Anonymous Coward · · Score: 0

      Except Charles Thacker has never ridden the mighty Moon Worm.

    3. Re:co-inventor by Desler · · Score: 1

      Your post was bad and you should feel bad for making it.

  17. Stanford by Anonymous Coward · · Score: 0

    Doug Englebart and the mother of all demos. PARC invented nothing.

    1. Re:Stanford by Anonymous Coward · · Score: 0

      Smalltalk?

      Oh, I forgot... Jef Raskin invented it first. :-P

  18. Re: Sad, but... by Anonymous Coward · · Score: 0

    Fuck?! You?!

    No. You still haven't made any sense.

    The reason we decided to ditch our original interface was because it was a complete dead end in terms of throughput.

    Nobody has 500m+ runs in buildings... But everyone needs more speed.

    But thanks for playing, idiot. Maybe that's why you haven't worked at PARC?!?!?!

  19. Ethernet? by plopez · · Score: 1

    Ethernet was based on AlohaNet developed at the University of Hawaii. It was built to provide network communications to data centers across the islands. They used shortwave radios to send packets across the ether to each other. When I was an undergrad we actually studied AlohaNet in my OS class.

    Maybe he refined it but he didn't invent it.

    --
    putting the 'B' in LGBTQ+
    1. Re: Ethernet? by Anonymous Coward · · Score: 0

      Ethernet was based on AlohaNet developed at the University of Hawaii. It was built to provide network communications to data centers across the islands.

      Umm, no.

      You're specifically thinking about CSMA/CD. Although that is an important part of some Ethernet PHY standards.

      Didn't you study that in University?

    2. Re: Ethernet? by plopez · · Score: 1

      Ummm no. It was the mother of ethernet. And much of what we call WiFi protocols as well. Not everything is invented in Silly Valley. Start reading up on ALOHA and AlohaNet. The impact it had was huge.

      --
      putting the 'B' in LGBTQ+
    3. Re:Ethernet? by Anonymous Coward · · Score: 0

      ALOHA was prominently featured in my German CompSci networking class too. It was even in the final test.
      Honestly I forgot most of the details, but I did remember the Hawaiian origin of modern networking.

    4. Re: Ethernet? by Anonymous Coward · · Score: 0

      Start reading up on ALOHA and AlohaNet.

      I studied it extensively at university, as I expect everyone in the world does, except apparently you.

      Like I said, it was no don't important, especially it's contribution to CSMA/CD technology. (I cowrote the 802.11a standard in case you doubt my credentials).

      But it wasn't Ethernet.

    5. Re: Ethernet? by Anonymous Coward · · Score: 0

      ALOHA was prominently featured in my German CompSci networking class too. It was even in the final test.
      Honestly I forgot most of the details, but I did remember the Hawaiian origin of modern networking.

      It would have been even better if you learned why you studied it.

      It was because of it's interesting use of two distinct frequencies.

      This is the simplest, or rather simple, solution to a particular problem.

        But then you should have been taught how this is now solved in other ways using a single channel.

      And hence how no modern networks are actually AHLOA like.

      It was a historical curiosity of use for how not to do things.

    6. Re: Ethernet? by Anonymous Coward · · Score: 0

      " it was no don't important, especially it's contribution to CSMA/CD technology."

      I got a headache trying to parse that... And it's means IT IS, Mr "co-wrote"... You co-wrote *what* with that atrocious command of the English language?

      And we can guess who wrote the other comments with it's instead of its...

      I wish there was an Apostrophe Sensing Contraction Avoiding Possessive Detection protocol for keyboards so dummies like you can appear to be somewhat educated.

    7. Re: Ethernet? by Anonymous Coward · · Score: 0

      Looks like autocowrecked converted "doubt" to "don't". With that swap-out, the sentence reads fine.

      And I'm pretty sure GP said that he co-wrote the 802.11a standard. Which, if true, makes him quite the subject matter expert on what is and is not in the wifi standards. Since he co-wrote them. And he's saying that ALOHANET was influential but not integral to those standards.

  20. um... by sootman · · Score: 1

    "It provided the model... that the computer industry spent the next 15 years catching up to."

    And Xerox didn't sell it for those intervening 15 years because....?

    --
    Dear Slashdot: next time you want to mess with the site, add a rich-text editor for comments.
    1. Re:um... by Anonymous Coward · · Score: 0

      "It provided the model... that the computer industry spent the next 15 years catching up to."

      And Xerox didn't sell it for those intervening 15 years because....?

      Because copier-heads.

    2. Re:um... by Anonymous Coward · · Score: 0

      "And Xerox didn't sell it for those intervening 15 years because....?"

      Same reason Commodore went from a billion dollar company to bankrupt in less than ten years?

      Too many navel-gazing Asperger's cases running the place.

    3. Re:um... by dbIII · · Score: 1

      And Xerox didn't sell it for those intervening 15 years because....?

      Because it wasn't a copier and management was too risk averse to go into the business of selling computers.
      It's really annoying that tiny (at the time obviously) startups like Apple and Microsoft did more with what would have been less than Xerox's coffee budget than Xerox did.

    4. Re:um... by Anonymous Coward · · Score: 0

      Look it up sootman, it's foundational computer history stuff. It has been written about thousands of times and it's a famous story.

      tldr; The Alto was too expensive and Xerox didn't "get it" anyway. Instead Steve Jobs and Apple got it.

  21. RIP-history. by Anonymous Coward · · Score: 0

    Since we're doing history, let me introduce you to a part of it

    https://www.youtube.com/watch?v=o4-YnLpLgtk

    About the same time period as the Alto (https://en.wikipedia.org/wiki/Lisp_machine)

    And there was no Jobs, Ellison, or Musk to do to the above like they did with {https://www.youtube.com/watch?v=uVCxfoG8bv4} this which is currently the number two desktop OS. So pioneer he may have been, but without the rest we'd still be at DOS levels.

  22. Racism and historical revisionism by Anonymous Coward · · Score: 0

    No AlohaNet was not particularly novel or important even in it's own time. Among protocol designers its largely an amusing application of literal hopping from island to island not unlike how amusing it would be for physicists to actually find an implementation of a spherical cow. How that was done was chosen from existing methods and then implemented. Nothing novel. Nothing new.

    I know historical revisionism is all the rage, particularly if you get to stick it to the evil Haoles, but racism is not a reasonable excuse for the obfuscation of history and the robbery of a great man's legacy. Particularly so when we are discussing his death.

  23. Re: Sad, but... by iggymanz · · Score: 1

    oh yes instead of fiber it was more economical to use coaxial ethernet (and Arcnet) and repeaters for large building and campus/site runs back in the day.

  24. Re: Sad, but... by Anonymous Coward · · Score: 0

    Amazing, someone from PARC comments and the obscenities start flying ?

    Respect to anyone who's worked at PARC, or who worked on Ethernet, the laser printer, and GUI etc.

  25. Re: Sad, but... by Anonymous Coward · · Score: 0

    Me again,

    I wonder if the teams at PARC imagined the cutting edge stuff they were working on would in the not too distant future be so common place and affordable that the average person would have this stuff in their homes?

  26. fumbling the future by Anonymous Coward · · Score: 0

    If you want to know about Thacker's and PARC's travails, read this book: https://www.amazon.com/Fumbling-Future-Invented-Personal-Computer/dp/1583482660

  27. That sucks by tezbobobo · · Score: 1

    Could we edit the title to at least include his name - credit where it is due.

  28. I was confused... by wkwilley2 · · Score: 1

    Based on the summary, I initially thought this guys name was Xerox Alta.

    I thought to myself, "that's such a badass name."

    --
    Have you ever fallen asleep at the keybhanusdiog?