The KiddiComp concept, envisioned by Alan Kay in 1968, while a PhD candidate and later developed and described as the Dynabook in his 1972 proposal A personal computer for children of all ages, outlines the requirements for a conceptual portable educational device that would offer similar functionality to that now supplied via a laptop computer or (in some of its other incarnations) a tablet or slate computer with the exception of the requirement for any Dynabook device offering near eternal battery life. Adults could also use a Dynabook, but the target audience was children.
Part of the motivation and funding for the Dynabook project came from the need for portable military maintenance, repair, and operations documentation. Eliminating the need to move large amounts of difficult-to-access paper in a dynamic military theatre provided significant US Department of Defense funding.
Though the hardware required to create a Dynabook is here today, Alan Kay still thinks the Dynabook hasn't been invented yet, because key software and educational curricula are missing. When Microsoft came up with its tablet PC, Kay was quoted as saying "Microsoft's Tablet PC, the first Dynabook-like computer good enough to criticize". A comment he had earlier applied to the Apple Macintosh
Original concept 
This concept was created two years before the founding of Xerox PARC. Kay wanted to make “A Personal Computer For Children Of All Ages.” The ideas led to the development of the Xerox Alto prototype, which was originally called “the interim Dynabook”. It embodied all the elements of a graphical user interface, or GUI, as early as 1972. The software component of this research was Smalltalk, which went on to have a life of its own independent of the Dynabook concept.
Kay wanted the Dynabook concept to embody the learning theories of Jerome Bruner and some of what Seymour Papert— who had studied with developmental psychologist Jean Piaget and who was one of the inventors of the Logo programming language — was proposing.
The hardware on which the programming environment ran was relatively irrelevant.
At the same time, Kay tried in his 1972 article to identify existing hardware components that could be used in a Dynabook, including screens, processors and storage memory. For example:
A standalone “smart terminal” that uses one of these chips for a processor (and includes memory, a keyboard, a display and two cassettes) is now on the market for about $6000.
Later works 
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- Richards, Michael ‘Mike’ (January 23, 2008). "Why the iPhone makes 2008 seem like 1968 all over again". Open2.
- Steinberg, Daniel H. (April 3, 2003). "Daddy, Are We There Yet? A Discussion with Alan Kay". O'Reilly.
- Kay, Alan (1972). "A Personal Computer for Children of All Ages". "A standalone ‘smart terminal’ that uses one of these chips for a processor (and includes memory, a keyboard, a display and two cassettes) is now on the market for about $6 000"
- Levy, Steven (April 30, 2001). "Bill Gates Says, Take This Tablet". Newsweek.
- Webster, "Dynabook", Dictionary (definition) (online ed.).
- "40th Anniversary of the Dynabook", Computer History Museum.
- "The Laptop Celebrates 40 Years", Wired, Nov 2008.
- Gruener, Wolfgang (April 17, 2010), "Did Steve Jobs Steal The iPad? Genius Inventor Alan Kay Reveals All", Tom's Hardware.
- Kay, Alan C (Aug 1972), A Personal Computer for Children of All Ages (PDF), DE: M Prove.
- ——— (27 May 1986), "Sketchpad, Grail and the Interim Dynabook" (QuickTime), The History of the Personal Workstation (movie clip) Unknown parameter
- "The World in your Own Notebook", The Best of Creative Computing (Atari archives) 3: 5.
- "From the Dynabook to Squeak – A Study in Survivals", Thinkubator, CA: SFU.
- "Tracing the Dynabook: A Study of Technocultural Transformations", Thinkubator (PhD dissertation), CA: SFU about the Dynabook project and vision
- "Toshiba's dynabook R – a lowcost (185$) tablet PC", Uber gizmo, Feb 2005.
- An Interview with Computing Pioneer Alan Kay, "Tech land", Time, April 2, 2013.