Jeff Jonas' photos
I took very few photos.
See the others above for more complete & fair coverage of all the displays.
David McGuire's BIG BLUE PDP-11/70
was clearly the star of the show
with 4 racks AND IT WAS RUNNING!
|Such a huge installation requires sysops!|
|These vintage terminals were live and connected to the big PDP|
The DEC VT05 is just SO RETRO!
wikipedia says: The VT05 was the first free-standing CRT computer terminal from Digital Equipment Corporation, famous for its extremely futuristic styling
Tech specs are on vt100.net
David Gesswein restored his "straight 8"
and it was all running!
The buzz of the Decwriter and chatter of the TTY were truly echoes of the past!
Here's a lovely touch to Gesswein's exhibit:
a scene straight out of the 70s.
Paper tape from DEC and DECUS, in the original boxes!
|Mike Ross' PDP15, exposed for all to see!|
|Bill Degnan's PC exhibit|
|Ian Primus' Apples to Apples exhibit|
|Herb Johnson's s100 exhibit|
Ben Greenfield's custom computers
starring the Minuteman-1 D17B Interial Guidance system
core and the Raytheon CK1383A
Glenn's Computer Museum describes the tube memory and links to the datasheet.
Raytheon 8602/CK1383A Recording storage CRT
This is a storage and scan-conversion tube, not specifically intended for computer use but could be used that way. It's a variant of the 7702 (7702 offers either magnetic or electrostatic focusing; this one offers only magnetic). It can be written-into, then will hold the information for hours and provide thousands of readout scans. Has separate "write" and "read" guns. Typical use was "slowing-down" of radar video for transmission over phone lines. This is an analog device with 1200 lines of resolution, so in digital terms it was in the megapixel range, each pixel had a shades-of-gray capability, which nominally expands the equivalent digital capacity a lot more.Ron Lawrence's "Radio Heaven" Tube Collection.
also features CRTs, radio & radar tubes, including the
VT-158 Zahl Tube INVENTED HERE AT CAMP EVANS
by Major Harold A. Zahl for the WW-II AN/TPS3 radar.
the Amateur Computer Society of New Jersey Meeting #1 Reunion
MARCH analog computer collection
EAI-20 donated by Nick Lordi
Heathkit EC-1 donated by Steve Anderson
GAP/R tube op-amps, Jeppesen E6B Flight Computer, slide rule donated by Jeffrey Jonas
Slide rule book a gift from the Thomas Kirk estate.
These relate directly to the VCF 2012 presentation
Kent Lundberg, Ph.D.: History and Impact of Analog Computing
Despite the ubiquity of all things digital, electrical engineers owe an enormous debt to analog computing. Many of our tools, technologies, and theories are descended from mechanical and electronic analog computers that were built in the early (and late) twentieth century. From the mechanical computers of Lord Kelvin and Vannevar Bush to the electronic systems of John Ragazzini and George Philbrick, analog machines helped win WWII, launch the space race, and solve thousands of industrial problems. Analog machines were used well into the 1970s, and some researchers still find pragmatic yield in their use today. Dr. Lundberg will discuss the history, personalities, impact, and legacy of analog computing in the fields of simulation, circuit design, and engineering education.
Someone wrote this nice BASIC program to scroll text
across the Wang screen
(apropos of Dr. Thomas Kurtz Ph.D.'s BASIC presentation)
The MARCH Homebrew Room houses the growing collection of
single board computers / evaluation kits.
|New hall signs helped folks find the museum, and bathrooms.|
|The Amdahl 4705 Front End Processor was fondly remembered|
an enduring Camp Evans legacy