Aristo M 75

Date of introduction:  1975 Display technology:  LED
New price:   Display size:  8 (5+2)
Size:  6.0" x 2.5" x 0.7"    
Weight:  4.1 ounces Serial No:  
Batteries:  3*AA or NiCd 6796 Date of manufacture:  year 1975
AC-Adapter:  Aristo 6790, 6795 Origin of manufacture:  Germany
Precision:  8 Integrated circuits:  Rockwell A4002
Memories:  1    
Program steps:   Courtesy of:  Peter Muckermann († April 21, 2021)

Dennert & Pape, the famous maker of the ARISTO slide rules entered in the year 1975 the market of scientific calculators. The design followed the M 36 four-function calculator introduced already in the year 1973. Thinner and slimmer than most other calculators e.g. a Texas Instruments SR-50 the ARISTO M 75 matched the appearance of traditional slide rules. German competitor Faber-Castell took a similar design approach but added even a traditional slide rule on the back of the TR1 electronic pocket calculator.

horizontal rule

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