Aristo M 27

Hamburg (Germany) located company Dennert & Pape started already in the year 1872 the business with slide rules. About 100 years later they introduced under the trademark ARISTO with the model M 27 their first electronic pocket calculator. The M 27 based on the „calculator-on-a-chip" manufactured by Texas Instruments and found in a lot of other calculators like the Bowmar 901B and even the TI-2500 Datamath. Compared to these products the M 27 is unexpected small and shows an unique design based on a housing with a white bottom, a mat black top and keys in bright yellow and red colour. The next calculator in the ARISTO line is the M 36 sporting an additional memory key. The M 36 could be called the most beautiful calculator and ARISTO kept this design for the next some twenty calculators.

If you have additions to the above article please email: joerg@datamath.org.

© Joerg Woerner, May 3, 2002. No reprints without written permission.