Get email productivity tips!  
  Home Contact Legal Stuff  

I collect slide rules and other historical computing artifacts. Most of these have interesting stories to tell...
 
 

The Why and How of HOC collecting. My personal take on this fascinating hobby.

Links and Resources. Other sites with HOC exhibits and knowledge.

Start Here to view the HOC exhibition item by item, or click any exhibit below.


The enigmatic Spirule 
 
Magnetic core memory
 
Gravet Lenoir
slide rule
 
A Mathematical Robot
 
Flight computer

Not a Toy!...
 
A curious hybrid
 
Correntator slide adder
 
Odhner Pinwheel Calculator
 
Ivory Sector

Hard Fonts
 
Mahogany
and Glass
 
The first PDA
 
Computer with a dial
 
Fowler's circular slide rule

Chenevier's Memento
 
Software by
the yard
 
A Victorian "Calculator"
 
A Bill full of holes
 
Enter the Altair!

Homemade hydrological rule
 
The incredible
Curta
 
ALKU glass
slide rule
 
Iron Felix calculator
 
El Calculador!

Stephens' Supremathic
 
Psychrometric slide rule
 
Chesterman's
Cattle Gauge
 
Thacher's monster slide rule
 
Joe Gerber's pajamas

The Bare Bones
Hemmi No. 22
 
Beautiful Digits
 
Blue Velvet
 
Just a couple
of relays
 
The Xeroxed
calculator

Black Gem
 
Locke's adder
 
Farmar's profit calculator
 
Kaufmann's
Posographe
 
Hand wired memory!

Piercing the unknown
 
Ken+Add adder
 
Michaelis's calculator
 
Biorhythmic calculators
 
Webb's Adder

Gunter's rule
 
Krüger's Rechen-Federkasten
 
Leib Stern's
Slide rule
 
An unusual
form factor
 
How the sliderule got its Cursor

Kally's water
flow calculator
 
A lovely gauging
slide rule
 
The Small calculator
 
Five little
Intel Chips
 
Three pencil
slide rules

   New exhibits added as time permits   RSS

 

Home | HOC | Fractals | Miscellany | About | Contact

Copyright © 2005-2012 N. Zeldes. All rights reserved.