Mechanical calculators
Java applet of Chinese, Japanese and Russian abaci tux abacus
Abacus
The World’s Smallest Abacus research ibm atomic
IBM Research | Projects | Atomic and Nano Technology | Engineering with individual molecules at room temperature
Abacus Photos and Images abacus abacus images
★ Abacus Device Images and photos at Abacus.ca Image
Roman abacus
Roman Abacus
Mesoamerican abacus (this site is no longer online - but the webarchive backup is; however, one of the author’s documents comparing the organization and use of the Mesoamerican abacus and the Chinese abacus is mirrored at
A Comparison of Chinese and Mesoamerican Abacuses
Suan Pan
Chinese Abacus
Soroban: The Japanese Abacus Soroban direct from Japan.
Soroban
Soroban Abacus Handbook A guide to addition, subtraction, multiplication and division.
THE ABACUS HANDBOOK
Soroban soroban
first set of words
Lee Kai-chen's Improved Abacus - A demonstration of how the Lee's Abacus works
LEE KAI-CHEN ABACUS - A Demonstration
Advanced Abacus Techniques soroban
Advanced Abacus Techniques - Abacus Instruction. Advanced abacus. Soroban, suan pan techniques.
Abacus: Mystery of the Bead - An Abacus Manual
ABACUS: MYSTERY OF THE BEAD - Abacus Instructions Manual. How to use an abacus. Abacus instruction.
Abacus abacus
The Abacus: Index
Abacus Tutorial Online tutorial teaches addition, subtraction, multiplication, division and square root using abacus.
Learn Chinese
Good to know http://www.froola.com. Mechanical_calculators
Suan pan in Various Number Systems at cut-the-knot
Suan pan in various number systems
Soroban in Various Number Systems at cut-the-knot
Soroban in various number systems
Abacus in Various Number Systems at cut-the-knot
Abacus in various number systems
Full text of translation of "Sketch of the Analytical Engine" by L. F. Menabrea with Ada's notes and extensive commentary babbage sketch
Sketch of The Analytical Engine
Famous Economists Grave Sites web uvic
From Analytical Engine to Electronic Digital Computer: The Contributions of Ludgate, Torres, and Bush , Annals of the History of Computing, Volume 4, Number 4, October 1982.
The Analytical Engine at Fourmilab babbage
The Analytical Engine
Antikythera Mechanism . "The Engines of Our Ingenuity". KUHF-FM, Houston.
No. 1031: Antikythera Mechanism
The Antikythera Mechanism's Implications ". Text of the 1993 APA Abstract.
The Antikythera Mechanism
The Antikythera mechanism : The clockwork computer". September 19, 2002.
The Antikythera Mechanism : Physical and Intellectual Salvage from the 1st Century B.C.". USNA Eleventh Naval History Symposium.
Rob S. Rice
USNA Eleventh Naval History Symposium
Paper for Collected Volume
An Ancient Greek Computer ". Scientific American, June 1959. p. 60–67.
An Ancient Greek Computer
The Antikythera Mechanism giant users rupert
The Antikythera Mechanism
Antikythera Mechanism MOV files anti
HTML Redirection
Geartrain diagram horology anti
Antikythera Mechanism
Java Animation by Bill Casselman)
antikythera-animation
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