Projects 2015-25: Interactive Computers, the DEC legacy.

PDP-1 (1959)

Famous for the MIT hackers that loved it, and the first ever videogame - spacewar. The ultimate early 'democoder' machine. More

PDP-8/I (1968)

Amazing for its simplicity and the quality of the software written for it. See what created MS-DOS, but also embedded computers. More

PDP-10 (1968)

Alien mainframe-class monster and yet so fun running ITS. PDP-10 knowledge is like knowing the ancient Greeks.More

PDP-11/70 (1975)

So successful it defined what is normal today. Where Unix grew up; and where Windows NT got its roots (RSX-11). The 11 started it all. More



These replicas cover the major steps in ‘interactive computing’ from 1959 to 1975,
through the product line of DEC

Digital Equipment Corporation emerged from Project Whirlwind and MIT. For 30 years, it was the undisputed trailblazer of interactive computing. The strand of computing that led to Windows, Unix, Linux, Android and microcontrollers.




Projects 2025-27: The Dawn of Computing.

Enigma (1923-45)

WWII’s infamous cipher machine that helped trigger the computer revolution, part of the Alan Turing story. More

LGP-30 (1956)

Stan Frankel's Desk (not Desktop) Computer that paved the way for personal computing. 2026

Whirlwind (1945)

The first interactive computer with a keyboard. But alas, not an alphanumeric keyboard. 2027

?

WIP and Terribly Secret
- the project slated for 2028 :-)



These replicas cover the dawn of the computer age, up to 1959

Recreating the time of the pioneers, from Alan Turing to Stan Frankel. When it was not clear what a computer should be, or could be. Not even what the word should be. We start this series early, with the Enigma Machine, the breaking of its code involving the Father of Computer Theory and sparking off the first programmable computer.


Youtube: Animated Blinkenlights Collection

RetroBytes Youtube: DEC history

Our replicas and their place in the evolutionary tree of computing

The chart below is incomplete and oversimplified! It serves only to quickly put our replicas in their historical context. So. Whirlwind begat the PDP-1, which spawned three very different computer types. The minimalist PDP-8 gave birth to embedded and personal computing leading up to MS-DOS.
The PDP-11 was where unix grew up, spawning workstations and later, anything to do with Linux, Macs, Android. But less well-known is that the developers of its RSX-11 OS were called in by Microsoft to develop Windows NT, a complete break with the MS-DOS past of personal computers. You can see the roots in RSX-11.
Meanwhile, the glorious, super-powerful PDP-10 architecture went the way of the Dodo. But that is only true for its type of hardware. Its legacy in computer culture (hacker culture, Open Source) and countless ground-breaking computer science concepts is huge, felt to this day.

So yes, the above is an oversimplification. But gives a quick picture of how our 5 replicas, combined, cover all the strands of computing before the microprocessor era. Except, we give very little respect to the World of Mainframes here. Which is good, righting that wrong will give us plenty of future projects.


Why this web site?

Our projects have been scattered all over the internet. This is the overview site with a single sub-page for each replica. The sub-pages then will bundle all the links to various project sites and further information, for those who want to dig deeper.
The scope of our work grew a lot over the years, from making a nice one-off replica to the ambition of covering all the major steps in computer history. This will be our front page on the web. Once the 'interactive computer' replica series above is completed, we'll be delving into to the other strand of computer history: the World of IBM. So we think there will be more and more need to have an entry-level overview of it all.

We're not the only ones doing this. Scroll down further to see recommended replicas from other Makers that we own and enjoy

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Recommended from other Makers

We are hardly the only ones making replica 'time capsules'. We don't pretend to give a complete overview, but here are some of them from other Makers that we own and enjoy. Let us know of any other replicas that qualify in the sense of being 'history capsules', and we will add them here for a complete overview. More is better, because more is more.

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