If
you want all this information in a book, 6 PowerPoint and more in a CD ROM
Spanish version, you can have it for just 25 Euros.
Contact me in the following address: JOSEPBALSACH@telefonica.net
I decided
to start writing the book: "DE LA MANO AL CÁLCULO ELECTRÓNICO", 4.000
años calculando (FROM THE HAND-TYPING TO THE ELECTRONIC CALCULATION, 4.000 year calculating) since I checked it did not
exist any book about calculating machines written in Spanish and few in foreign
languages. The book is about all
the instruments the men used to calculate since the prehistory up to nowadays.
It explains, by chronological order, who invented these instruments, a
summarise explanation about the marks, history, curiosities and the mechanical
functioning. Copier of old advertising, instruction manuals, pictures, patents,
web sites.... up to more than 300 different marks. You can also calculate really with two old
machines
This book
is more extensive than the book written by Ernest Martin: "THE CALCULATING
MACHINES (DIE RECHENMASCHINEN). THEIR HISTORY AND DEVELOPMENT.
You can find this book in the following web
site: http://www.mipaginapersonal.movistar.es/web3/calculating/
Please do not hesitate to contact me in: JOSEPBALSACH@telefonica.net