"James Redin" <jredin(a)earthlink.net> wrote:
I've found that the ANITA from Sumlock Comptometer
of England (1963) is
usually regarded as the first electronic calculator [1]. However, recently
I found an article about Heinz Nixdorf of Germany in the LEXICON's History
of Computing (CD-ROM) which indicates that he built several models of
electronic calculators back in 1954 (Models ES12 and ES24).
At the risk of suggesting the obvious, have you contacted
the Heinz Nixdorf Museumforum? They have a web site at
http://www.hnf.de/ and one of the pages contains a list of
contact addresses. However, you will either need to read
German or have good luck with the translator at
http://www.altavista.digital.com/ (which is of limited use
on HNF's site because some of the text is embedded in images).
-Frank McConnell