The Abacus: a history, how to perform addition, subtraction, multiplication and division, John Henry-like contests between man/abacus and machine and more...
General commentary and new links from Richard Gillmann. Sometimes it's funny, sometimes it's serious, and sometimes it's just there.
The Abacus: a history, how to perform addition, subtraction, multiplication and division, John Henry-like contests between man/abacus and machine and more...
0 Comments:
Post a Comment
<< Home