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New blog on (some) rare and old computer

by cyberfritz - 03/25/2009
Total messages in this thread: 3
Last Post: [ Spreadsheet version: yes ] 03/31/2009
Dear all, if you like this blog, you might want to consider also this (I admit it, my) blog: A major contribution (at least that's what I hope) of it is my Ebay prices list of some rare computers together. The blog is all about some rare computers, about the rarity of old computers, and mostly theoretical thoughts about collecting rare computers. In contrast to this excellent blog, you won't find technical how-tos or technical tips and tricks. I'm looking forward your visit. Regards, cyberfritz... [ read more ]

The Bouncing Beastie

by billdeg - 03/30/2009
Total messages in this thread: 1
The Bouncing Beastie by Martin Winzenread appeared in the September 1976 Dr. Dobbs Journal: http://vinta...Demo%20Program.pdf I typed in a version that will work on the Processor Technologies' CUTER program with the VDM-1 [ read more ]


by billdeg - 03/26/2009
Total messages in this thread: 1
Evan gave me a GRiD GRiDPAD 1910 laptop without a power supply. Using another GRiD powersupply that feeds 17.25V I was able to boot this system.
The GRiD GRiDPAD 1910 touch-screen laptop.
The touchpad has some bad spots, but I was able to look around. There are three drives, all stored in ROMS, no disk drives. Pictures of GRiD laptops... [ read more ]

Hacking Weekend

by billdeg - 03/16/2009
Total messages in this thread: 1
This weekend a few friends from the MidAtlantic Retro Computing Hobbyists came by to work on old systems. Here are a few pictures.
Moving a wheel barrel full of TRS 80 Model II's Click image for larger picture.
Dan Ragonti was able to almost get his PET 2001-8 working by swapping parts from a working PET for comparison purposes, and replacing RAM. PET 2001-8 pic 1 PET 2001-8 pic 2 PET 2001-8 pic 3 ... [ read more ]

Xerox x973 Dual 8

by billdeg - 02/27/2009
Total messages in this thread: 1
Quiz: what drives are in this Xerox x973 Dual 8" drive?
Xerox x973 Dual 8" drive
A) Shugart 801 B) Mitsubishi M2896 C) Tandon 848-2 Answer: A... [ read more ]

Micro World Sept. 1976

by billdeg - 02/26/2009
Total messages in this thread: 1
"A Computer Newsletter for the East Coast" (USA)
Click image for PDF to download. This is a home-brew 'zine (note spelling "intorductory") example probably included in the goody bags of registrants to the Personal Computing 76 Consumer Trade Fair in Atlantic City, NJ. The event was August 28 and 29, 1976.
... [ read more ]

Heathkit EC-1 Analog Computer

by billdeg - 02/26/2009
Total messages in this thread: 1
This is the oldest complete computer in my inventory.
The 1960 Heathkit EC-1 is one of the first desktop computers. This is an analog computer with no RAM and whose display is an oscilloscope.

I will post more information about this system once I finish reading the manuals and testing the connections, etc. In the mean time, here are some pictures.... [ read more ]

ROM Computer Applications for Living

by billdeg - 02/26/2009
Total messages in this thread: 1

ROM Computer Applications for Living was a short-lived magazine in the later 70's. This issue has an interesting article by Ted Nelson about the development of computer screen technology titled The Art of the Computer Screen. Nothing says "hi-tech" like needlepoint, right?
... [ read more ]


by billdeg - 02/21/2009
Total messages in this thread: 1
Artist's rendering of the XEROX Dynabook notebook computer.
From the People's Computer Company May 1976 newsletter: "..We've been hearing about the Dynabook fantasy for a long time. Below are some excerpts from the recently published report on the Dynabook project, entitled "Personal Dynamic Media" by the Learnmg Research Group, Xerox Palo Alto Research Center. .." Click to download PDF of this article... [ read more ] references

by billdeg - 02/20/2009
Total messages in this thread: 1
10 steps in the evolution of portable computing Note some of the pictured systems were supplied by, as well as frieds Evan Koblentz (Pres MARCH) and Erik Klein ( [ read more ]

PACS Speaking Engagement

by billdeg - 02/18/2009
Total messages in this thread: 1
May 16, 2009 - Vintage Computing: How the Evolution of Microcomputing Influenced PACS with Bill Degnan [ read more ]

Epson PX-8 Video on

by billdeg - 02/15/2009
Total messages in this thread: 1
For your viewing pleasure, here is a short stock footage movie of Kelcey using an Epson PX-8 laptop computer: http://www....atch?v=A_6Q7PNd1p8 I received this info from Jan who runs a web site dedicated to the Epson PX-8/Geneva http://www....raan/comp/px8/ H101A (CODE AA) Geneva US keyboard H101A (CODE AC) PX-8 US keyboard H101A (CODE UA) PX-8 UK keyboard I can only speculate why my version has no label, but if I were to guess, I believe the LCD is a replacement screen. I am guessing that there was just one pool of replacement screens, and they did not get the "Geneva" or "PX-8" labels because it was not known whether the screen was being shipped to the US, UK, Japan, or elsewhere. Just a hunch. ... [ read more ]

California Computer Systems Series 2200

by billdeg - 02/13/2007
Total messages in this thread: 5
Last Post: [ Bootstrap Loader DJ/DMA ] 02/11/2009
The CCS Series 2200 Mainframe with Jade Controller, 64K RAM, Bitstreamer II, and Morrow drive controller.
More Pictures... [ read more ]

Compaq Contura 4/25c

by billdeg - 02/09/2009
Total messages in this thread: 1
The Compaq Contura 425c. Note that the pointing device for this laptop was a detachable trackball mouse, which allowed for a larger keyboard. There is a spring that is used to clamp the trackball to the side of the keyboard on the side front.
The Compaq Contura 4/25c is a 486 laptop that I used to support when I worked at Zeneca in the early 1990's. The Contura was a lighter-weight Compaq laptop of the early 1990s. I received this computer with Windows 95 installed, but it would have come with Windows 3.1. I tested the modem and it worked. The battery needs to be replaced, it would not hold a charge. Pictures... [ read more ]

RetroChallenge 2009 - Apple II Biorhythm

by billdeg - 01/26/2009
Total messages in this thread: 3
Last Post: [ And the Winner Is... ] 02/08/2009
I signed up for the 2009 RetroChallenge http://r.../winter/news.html href="/apple/appleII/appleII_display_graph.jpg">
Apple II with Apple disk drives and Sony Trinitron color television. Note Biorhythm program running on display. Click thumbnail for larger image.
THE PROJECT: Write a Y2K-compliant Biorhythm program on and for the original Apple II computer, using a vintage color TV. Here is the Biorhythm video: http://www.youtu...tch?v=jYoY1cwAd90 href="/apple/appleII/">Apple II and Biorhythm Photographs NOTES: In order to run the program as intended, load Biorhythm on an Apple II 16K through a television by using one of the special RF signal generators made for the Apple I... [ read more ]
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