Exhibits presented so far 34) Die Additionsmaschine von Johann Jakob Sauter aus dem späten 18. Jahrhundert 33) Rechengerät aus dem 17. Jahrhundert - Burattini oder Morland? 32) Die Additionsmaschine von Charles Xavier Thomas aus dem Jahre 1849 31) Die „Grasshopper“ von George B. Grant aus dem Jahr 1871 30) Die Vierspezies-Rechenmaschine Centennial von George B. Grant 29) Die koplanare Zahnscheiben-Addiermaschine von Didier Roth aus dem Jahr 1842 28) Die kreisrunde Staffelwalzenmaschine von Joseph Edmondson für alle vier Grundrechenarten 27) Koplanare Zahnscheiben-Addiermaschine von Charles Stanhope aus dem Jahre 1780 26) „Matador“-Tastenaddiermaschine mit Kurbel 1906 25) The single column key adding machine by Ferdinand Hebentanz from the year 1873 24) Column adding machine by Moses and William Pullen from the year 1874 23) „The Improved Adding Machine“ by Caroline Winter from 1859 22) The arithmetic manipulator by Niccola Guinigi from 1858 21) Tito Gonnella’s coplanar adding machine with tooth lock washers from the year 1859 20) The automatically multiplying calculating machine by François Timoléon Maurel and Jean Jayet from the year 1846 19) The “Z25” transistor computer by Konrad Zuse 18) Arthur Burkhardt’s Arithmometer – the start of calculating machine production in Germany at the end of the 19th century 17) Didier Roth’s circular calculating machine for automatic multiplication from 1841 16) The mechanical calculator for all four arithmetical operations by Anton Braun (1727) 15) “The Millionaire” – Calculating machine for direct multiplication by Otto Steiger 14) The four-species calculating machine with a switching latch by Heyde and Büttner from the year 1883 13) Four-species calculating machine with a switching latch mechanism by Friedrich Weiss from the year 1893 12) Prototype of the four-species calculating machine with a switching latch mechanism by Curt Dietzschold from the year 1876 11) Christel Hamann’s “Gauss-Mercedes” calculating machine with the unique stepped disc from the year 1909 10) Jacob Auch's adding machine 09) The "Hamann Manus" calculating machine 08) Adding machine by Philipp Matthäus Hahn 07) The patent model of Thomas de Colmar’s Arithmomètre from the year 1820 06) Multiplication Instrument by Samuel Morland 05) Johann Christoph Schuster's calculating machine 04) Blaise Pascal's calculating machine 03) The mechanical calculator for all four arithmetic operations by Axel Jacob Petersson 02) The mechanical calculator for all four arithmetic operations by Johann Jakob Sauter 01) The first mechanical calculator for all four arithmetic operations by Gottfried Wilhelm Leibniz
