Five Most Wanted

HP 2000ASR-33APF Imagination MachineHeathkit H11CompuColor 2


Welcome to The Trailing Edge

This site is devoted to computing technology which has been left behind by the rapidly advancing Leading Edge of computing. Many interesting and useful systems have been forgotten with the mad rush to stay on the Cutting Edge and maintain the high sales of hardware and software companies. While we too like to have the latest and greatest, we don't want people to forget the legacy which lead to today's systems. Many of these older systems were once considered part of the Bleeding Edge but most people know little if anything about them or just dismiss them. If you have some item related to these old systems that you'd like to clear out or just want to say hello and share some story about them, you can email me at dlw@trailingedge.com.

If you are looking for the used PC store in Canada, this is not it. What you are looking for is here.

Recent News

2009-10-19The scanning will continue
Added more documents today. Atari 1050 Owner's Guide, Atari Trak-Ball Controller Owner's Manual and the Tandy Color Computer Multi-Pak Interface Owner's Manual were added to the Resources sections for those systems.

2009-10-18Sharing Time
Posted a copy of my old Honeywell GCOS Time-Sharing System Pocket Guide, my Honeywell FORTRAN Pocket Guide and my GMAP Pocket Guide in the Miscellaneous section of the site. From my fun days with the Honeywell mainframe in college.

2009-10-17New PDFs
Added a new PDF to the Miscellaneous Resource Center. This is the Aquarius Software Catalog from 1982. More to come as I get this pile of stuff scanned.

2008-10-19Back online
Between moving followed by a little thing like hurricane Ike, the site has been down for a LONG time but is finally back up. We have a lot of work to do to update everything and a lot to catch up on, email, info, etc. It's good to be back at last though.

2007-06-23More Exidy
Added the May 1980 Exidy Catalog and Price List to the Exidy Resorces section of the site. Received a Exidy Sorcerer in original box, tv and box of doc and software recently so expect more updates as I can get to them.

One of the items in the box of Exidy stuff was an unopened package of 4116 16K dynamic rams from Radio Shack. Price on them is $7.95 which is a lot less than I paid for my first set of eight 4116s. I have to admit, finding this gave me a bit of a thrill.

Site Copyright © 1997 - 2010 David Williams