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Hardware Hacking

Home-Built Turing Machine 123

stronghawk writes "The creator of the Nickel-O-Matic is back at it and has now built a Turing Machine from a Parallax Propeller chip-based controller, motors, a dry-erase marker and a non-infinite supply of shiny 35mm leader film. From his FAQ: 'While thinking about Turing machines I found that no one had ever actually built one, at least not one that looked like Turing's original concept (if someone does know of one, please let me know). There have been a few other physical Turing machines like the Logo of Doom, but none were immediately recognizable as Turing machines. As I am always looking for a new challenge, I set out to build what you see here.'"
Medicine

Child Receives Trachea Grown From Own Stem Cells 103

kkleiner writes "Doctors at the Great Ormond Street Hospital (GOSH) along with colleagues at the University College London, the Royal Free Hospital, and Careggi University Hospital in Florence have successfully transplanted a trachea into a 10 year old boy using his own stem cells. A donor trachea was taken, stripped of its cells into a collagen-like scaffold, and then infused with the boy's stem cells. The trachea was surgically placed into the boy and allowed to develop in place. Because his own cells were used, there was little to no risk of rejection. This was the first time a child had received such a stem cell augmented transplant and the first time that a complete trachea had been used."
Medicine

High Fructose Corn Syrup Causes Bigger Weight Gain In Rats 542

krou writes "In an experiment conducted by a Princeton University team, 'Rats with access to high-fructose corn syrup gained significantly more weight than those with access to table sugar, even when their overall caloric intake was the same.' Long-term consumption also 'led to abnormal increases in body fat, especially in the abdomen, and a rise in circulating blood fats called triglycerides.' Psychology professor Bart Hoebel commented that 'When rats are drinking high-fructose corn syrup at levels well below those in soda pop, they're becoming obese — every single one, across the board. Even when rats are fed a high-fat diet, you don't see this; they don't all gain extra weight.'"
Games

The Murky Origins of Zork's Name 70

mjn writes "Computational media researcher Nick Montfort traces the murky origins of Zork's name. It's well known that the word was used in MIT hacker jargon around that time, but how did it get there? Candidates are the term 'zorch' from late 1950s DIY electronics slang, the use of the term as a placeholder in some early 1970s textbooks, the typo a QWERTY user would get if he typed 'work' on an AZERTY keyboard, and several uses in obscure sci-fi. No solid answers so far, though, as there are problems with many of the possible explanations that would have made MIT hackers unlikely to have run across them at the right time."

Comment Re:the school district model (Score 1) 620

I just spent a minutes on Google Earth lurking around some of the places I visited in Mountain View, Santa Clara, Palo Alto sometime shortly after Atari went bust IIRC. Weird Stuff, Frys, Computability(? book store) and if I remember right HSC. There was also "Halstead" (Hdb?) Electronics up in Redwood City - looks like it is now gone. I'm glad (not!) that I grew up in the midwest where we had literally *none* of those places - nearest Radio Shack was 45 minutes away. Leaving SFO I had to pack extra careful just to fly home with all the junk I bought! I could not imagine the problems I would have today checking it in my luggage.

Comment Exactly; No to the shirts... (Score 1) 837

Companies are actively segregating employees, ranking them by their "importance" to the company. Why? All the way from the quarterly reporting on gross revenue/employee to justifying the summer picnic expenses to making the business more salable.

Open Source

Linux Kernel 2.6.32 Released 195

diegocg writes "Linus Torvalds has officially released the version 2.6.32 of the Linux kernel. New features include virtualization memory de-duplication, a rewrite of the writeback code faster and more scalable, many important Btrfs improvements and speedups, ATI R600/R700 3D and KMS support and other graphic improvements, a CFQ low latency mode, tracing improvements including a 'perf timechart' tool that tries to be a better bootchart, soft limits in the memory controller, support for the S+Core architecture, support for Intel Moorestown and its new firmware interface, run-time power management support, and many other improvements and new drivers. See the full changelog for more details."

Comment Use silica sand in a capsule (Score 1) 289

A similar concept to yours, pressing a silicone button on the drive breaks open a sealed capsule of silica sand into the HDA; this would most certainly scrub any magnetic film from the rotating disks. And during its self destruction, it would attempt to rezero and seek, sure to polish most every data surface and thoroughly destroying the heads .

Comment Re:Healthy Mix of Old and New (Score 1) 396

Don't listen to these people... It says that you really liked the free time and imagination you had when younger.

I have done the same - slotcars (some repo, some orig), wham-o superballs, my old marble collection, model and electronics kits, science fiction movie and poster collection. Funny thing, you can find them in better shape and more complete now than I could find or afford then.

All that stored happiness, with little maintenance cost, for less than $1k - where can you get a better bargain than that?

PS Still waiting for that primo Matt Mason for 15 bucks.

Comment Bashed the 400/800 Translator disk into EPROMs (Score 1) 253

As many others, I had a blast with the 400/800/XL Ataris. In one hacking project I ran the official 400/800 Translator disk which overlayed the internal XL OS ROMs with those mostly compatible with a 400/800 system. After loading I then dumped the memory locations, readdressed them, and used an EPROM burner of my own design (my coworkers laughed - you should have seen the EPROM eraser they made up to mock my attempts, complete with framing hammer) to burn it into an EPROM, which I used to replaced the on board ROMs. As well, I fixed a few things I didn't like the OS defaults (don't remember now what they were tho'). I had several (P)ROMs selectable via switch and a board I layed out and etched. Most anything would then run on an XL, some that the Translator disks would not as I recall.

I also organized a user-group hardware project to build the famous bank-switched memory add-on published, where, maybe Byte mag. I modified it to use the 256k chips IIRC. 5-10 people but only a few comprehended what they were doing, and only a few finished though everything was supplied including solder.

Those were the days.

Comment Americans tend to technology fixes; for how long? (Score 1) 499

Americans could look to technology as long as the resources of the land supported individualism (that IMHO cannot last further than, say, another century based upon population growth). As our needs overlap, the need to cooperate and find political solutions will grow as fast, maybe faster, than even technology needs.

Comment "high-end product"... (Score 1) 475

That is where we differ.

Something that is bound to be as ephemeral, trite, as (most) television is should not be payed for by me; I should be payed for watching it. Though of course, many people also are voluminous readers of romance novels as well.

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