All Things Digital

For those who love a five-ton mechanical computing device, Silicon Valley’s Computer History Museum recently installed a Babbage Difference Engine.

Designed on paper by English inventor and mathematician Charles Babbage (pictured here with his creation) and built to his specifications, it is on loan for one year from former Microsoft (MSFT) tech guru Nathan Myhrvold.

(Myhrvold will be a speaker at our sixth edition of D: All Things Digital, taking place in exactly two weeks.)

Babbage was one of the great stories of the early computing age, a man who intricately designed one of the first automatic computing engines to battle the inaccuracies endemic in figures calculated by hand.

As the overview of this video relates: “Engineering, astronomy, construction, finance, banking and insurance depended on printed tables for calculation. Ships navigating by the stars relied on printed tables to find their position at sea. The stakes were high. Capital and life were thought to be at risk … it was not only the grindingly tedious labor of verifying a sea of figures that exasperated Babbage, but their daunting unreliability.”

Despite his laborious and detailed designs, though, Babbage never actually built his creation.

But other geeks took up the task and there are two now, both called Difference Engine No. 2, one in London and one now at the museum. Each has 8,000 parts, weighs five tons and measures 11 feet long and seven feet high.

Check out the video:

Earlier this week, BoomTown posted our speaker list for the sixth edition of D: All Things Digital, which will take place in a few weeks–May 27 to 29, to be exact–in Carlsbad, Calif.

The annual gathering of tech and media luminaries was created and is run by my partner Walt Mossberg and me.

D6 tech and media speakers include: Microsoft Bill Gates and Steve Ballmer of Microsoft (MSFT); News Corp.’s (NWS) Rupert Murdoch; Jeff Bewkes of Time Warner (TWX); Mark Zuckerberg and Sheryl Sandberg of Facebook; Michael Dell of Dell Computer (DELL); IAC’s (IACI) Barry Diller; Amazon’s (AMZN) Jeff Bezos; Howard Stringer of Sony (SNE); and TiVo’s (TIVO) Tom Rogers.

Also: Tom Glocer of Thomson Reuters (TRI); Melinda Gates of the Gates Foundation; FCC Chairman Kevin Martin; Lowell McAdam of Verizon Wireless (VZ); Activision’s (ATVI) Robert Kotick; and former Microsoft tech guru Nathan Myhrvold of Intellectual Ventures.

Just recently, we added Jerry Yang, CEO and co-founder of Yahoo (YHOO), and now he is being joined onstage at the conference by Yahoo President Sue Decker (pictured here in a lovely Wall Street Journal dot-drawing).

The pairing should make for a lively session, given all the heat around Yahoo of late, largely related to the scuttled attempt by Microsoft to buy the company.

What would you like to know about that and anything else about Yahoo?

As it so happens, you can ask!

While the conference is sold out, you can submit questions that you would like answered to Yang and Decker or any of the speakers via text or video. Walt and I will pick the best ones and let loose.

Ask early and often here!

In addition, the whole conference will be online at AllThingsD during the conference, via live blogs and reports of breaking news (and there will be breaking news, as there always is), along with video highlights.

And videos of all the interviews will be posted soon after it is over.

Bill Gates and Steve Ballmer of Microsoft (MSFT). News Corp.’s (NWS) Rupert Murdoch. Jeff Bewkes of Time Warner (TWX). Yahoo’s (YHOO) Jerry Yang.

All of them engaged in roiling Internet deal-making of late and all of them in just three weeks on the same stage–but not, thankfully, at the same time, or we’d need a professional negotiator–at the 6th D: All Things Digital conference in Carlsbad, Calif.

The annual gathering of tech and media luminaries was created and is run by my amazing partner Walt Mossberg and me (see us here at D5) and will take place May 27 to 29.

The conference, as we describe it on our Web site, is “unlike any other executive conference.” What we mean by that is that we try to determine the next direction of the digital revolution via unscripted and informal, but pointed, conversations about the impact of digital technology with industry leaders.

In other words, Walt and I needling at the major players of the digital sector, until they give up the good stuff.

The other digital and media leaders coming? That would be: Mark Zuckerberg and Sheryl Sandberg of Facebook; Michael Dell of Dell Computer (DELL); IAC’s (IACI) Barry Diller; Amazon’s (AMZN) Jeff Bezos; Howard Stringer of Sony (SNE); and TiVo’s (TIVO) Tom Rogers.

Also: Tom Glocer of Thomson Reuters (TRI); Melinda Gates of the Gates Foundation; FCC Chairman Kevin Martin; Lowell McAdam of Verizon Wireless (VZ); Activision’s (ATVI) Robert Kotick; and former Microsoft tech guru and Nathan Myhrvold of Intellectual Ventures.

To say our timing is impeccably planned would be undeserved–we had no idea so much news related to all these companies and their leaders would break out, from the tough economy to takeover battles to court face-offs to mergers to trying to create a whole new way of reading.

Also, there will be some–as yet under wraps–amazing demos onstage too.

While the analog conference has been sold out for many months, the action will be on the AllThingsD.com site throughout the conference with round-the-clock live blogging by Digital Daily’s John Paczkowski, as well as video highlights from stage.

In addition, we’ll be pointing all over the Web to important tech and media news that breaks at D6.

And we will also stream the entire conference in the weeks after the conference takes place, so ATD’s audience can experience the whole thing, even if they cannot all attend.

But anyone’s questions can be there, though–this year, you can submit questions to any of the speakers via text or video that you would like answered. Walt and I will pick the best ones and let loose. Ask early and often here!

Walt and I are very excited for D6, even after last year, when we brought together industry legends Bill Gates and Apple’s Steve Jobs, for an historic joint interview.

At the time, Walt and I joked that we would not be able to top that amazing event (the video of the entire interview is below).

That interview was nearly unbeatable, but we also think that with the top-level interviewees we have assembled for D6, that it is game on.

Until then, here’s the Gates/Jobs video from D5: