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Resurrecting the Dynabook Vision: Squeak

Explore the evolution of Dynabook vision, role of Squeak, object-oriented programming, collaborative Dynabooks, and the impact of Steve Jobs. Learn about Smalltalk, multimedia tools, Squeakers projects, and the future of Squeak in new media applications. Discover the collaborative efforts of GaTech Squeakers and the array of innovative projects, from music synthesis to multimedia authoring. See where Squeak is heading next and how it excels in media creation, education, and real-time projects.

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Resurrecting the Dynabook Vision: Squeak

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  1. Resurrecting the Dynabook Vision: Squeak • What Steve Jobs Missed:The Dynabook Vision • What happened over the last 20 years • Why Squeak came to be • What it can do…Dynabooks • What GaTech Squeakers do...Collaborative Dynabooks

  2. What Steve Jobs Saw • Object-oriented programming • Class-based, methods, browsers for code exploration and entry • A fast bytecode compiler • Smalltalk compiles to bytecode (like Java) • Bytecode interpreted by a smallVirtual Machine (unlike Java :-) • PowerMac 308K, Win32 328K, Linux-Intel 276K, SGI Irix 609K, Solaris 816K • “Image” file contains all of object code, including development environment • 0.5M -> 5.5M • Runs comfortably in 4M, everything in 15M

  3. What Steve Jobs Saw • Development environment written in Smalltalk • Powerful tools for exploring system • Easily change code on the fly • Ease of porting • It’s all Smalltalk, all the way down

  4. What Steve Jobs Missed • Dynabooks • Alan Kay, Adele Goldberg, Dan Ingalls, Ted Kaehler • Goal: Creating the next “book” and the next “printing press” • Personal Dynamic Media, for learning and thinking • “A Personal Computer for Children of All Ages” • It’s about media, Steve! • And individual control of that media

  5. What happens next... • Steve Jobs steals ideas from Xerox, and Bill Gates steals them from Apple • Meanwhile… • Xerox sends Smalltalk-80 Release 1 to Tektronix, Sun, IBM, Apple • Gets ported all over the place • Alan Kay goes to Atari, then Apple • Adele Goldberg heads up Parcplace • Smalltalk-80 => ObjectWorks => VisualWorks • Digitalk Smalltalk/V, and others

  6. Fast forward to 1995 • Alan, Dan, and Ted are at Apple • Today’s implementations get the Desktop User Interface wrong! • Current multimedia composition tools miss the point • Smalltalk-80 was better than Director is today. • “Control of one’s own software destiny"

  7. Add some members to the team • John Maloney: Musician, inventor of Morphic UI for Self • Scott Wallace, inventor of MacApp: End-user programming

  8. Enter…Squeak! • Take the original Smalltalk-80 Release 1, and get it running again • “We never want to program in C again.” • Rewrite the virtual machine in Smalltalk • Write a Smalltalk-to-C translator • Generate a new virtual machine, with the source code in Smalltalk • Now it truly is “Smalltalk, all the way down” • Release the whole thing to the Internet • With an Apple License that requires enhancements to be shared • Within a month: Ported to UNIXes, Win95/NT • Later: PDA’s, set-top boxes, bare chips, SqueakOS • (Can run in a couple meg.)

  9. Enter…Disney! • Whole Squeak team leaves Apple for Disney Imagineering • It’s about media, Steve! • Port Morphic to Squeak • First Squeak game released at Disneyland last year • First Squeak game released on Disney Blast! in next six months

  10. Squeak Today • Even better programming tools • Including end-user programming • Media support • Going wild with text • Audio • MIDI • 3-D graphics • Flash • Tools: Email, web browser, web server, solitaire and Tetris (of course)

  11. Where the GaTech Squeakers Enter the Picture • We want Dynabooks, but we want them collaborative • Ease of composing, alone and together • Ease of sharing, commenting, critiquing

  12. Squeakers Projects: Shared Composition of Media • Webservers: • PWS: Pluggable Webserver • Comanche: Bolot Kerimbaev • CoWeb/Swiki: Jochen “Je77” Rick • Using CoWebs for Learning: Colleen Kehoe • ICsQueak: Dean “Dino” Mao

  13. Squeakers Projects: Ease of Constructing Media • Music Analysis/Synthesis for Math Learning: Rodney Walker • Music Editing Tools: Eddie Cottongim • MAT (Multimedia Authoring Tool) and Jukebox: Aibek Musaev • Tools for novice programmers: Jennifer Brown

  14. Squeakers Projects: New Kinds of Media • MuSwiki: Lex Spoon • Prolog + Jini + Squeak: Bolot Kerimbaev

  15. What Others are Doing • Facial animation • Speech synthesis and Text-To-Speech • MathMorphs, at UBA, Argentina • “Interactive Mathematica” • Regular expressions, YACC-like parsers • (Recreating the Alto)

  16. Where Squeak is going next... • Video and music editing/synchronizing in Squeak • “Replace HTML” • Drag-and-drop multimedia pages • Squeak in the Web • Books: Textbooks, edited volumes

  17. What Squeak is NOT for… • Use Java instead for: • Database connectivity • E-commerce or other high-traffic sites • Platform-specific look-and-feel

  18. What Squeak is GREAT for... • New media applications • More flexible, faster, and more cross-platform than Director • Inventing new media • Web-based, audio, video, whatever • CS learning and research • All of the source is there, all in one language, and it runs on any platform • Embedded and real-time projects • Interval just did a real-time OS in Squeak- OOPSLA99

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