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Calculator - Olivetti Summa Quanta 20

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Struttura del meccanismo

Funzione This is an electric office calculating machine which operates on either 110 or 220 volts. There is an integrated printer, which uses an ink ribbon. The machine has a reduced keyboard. The sub-total and total keys are marked respectively with a diamond and a star. The input register is visible through a positioning window. A small cursor marked with an arrow enables re-set. The C key is used for error correction. The mechanism is a rack and pinion drive invented in 1722 by Chrétien-Louis Gersten and developed by Olivetti starting in 1934. The number keys each have a tab which blocks the rack and pinion system, carrying the input figure onto the totalizer wheels.
 

Funzione di movente

Dimensione del meccanismo spaziale
 

Applicazione

Esempi di applicazione This machine is above all an adding machine, but it can perform three operations; multiplication is by repeated additions via the X cursor.
 
Permanent links
DMG-Lib FaviconDMG-Lib https://www.dmg-lib.org/dmglib/handler?mcdsc=3170025
Europeana FaviconEuropeana  http://www.europeana.eu/portal/record/2020801/dmglib_handler_mcdsc_3170025.html
Data provider
IFMIFMA  http://www.ifma.fr
PtcPATSTEC  http://www.patstec.fr
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