US2699290A - Electromagnetic adding device for computers - Google Patents

Electromagnetic adding device for computers Download PDF

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Publication number
US2699290A
US2699290A US216361A US21636151A US2699290A US 2699290 A US2699290 A US 2699290A US 216361 A US216361 A US 216361A US 21636151 A US21636151 A US 21636151A US 2699290 A US2699290 A US 2699290A
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US
United States
Prior art keywords
windings
switch
group
switches
closed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US216361A
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English (en)
Inventor
Hoppe Walter
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
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Publication of US2699290A publication Critical patent/US2699290A/en
Anticipated expiration legal-status Critical
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/38—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation
    • G06F7/40—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using contact-making devices, e.g. electromagnetic relay
    • G06F7/42—Adding; Subtracting
US216361A 1950-03-20 1951-03-19 Electromagnetic adding device for computers Expired - Lifetime US2699290A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH287272T 1950-03-20

Publications (1)

Publication Number Publication Date
US2699290A true US2699290A (en) 1955-01-11

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ID=4532096

Family Applications (1)

Application Number Title Priority Date Filing Date
US216361A Expired - Lifetime US2699290A (en) 1950-03-20 1951-03-19 Electromagnetic adding device for computers

Country Status (5)

Country Link
US (1) US2699290A (de)
CH (1) CH287272A (de)
DE (1) DE944586C (de)
FR (1) FR1044719A (de)
GB (1) GB727968A (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2909993A (en) * 1954-11-18 1959-10-27 Ibm Printer for calculating unit
US3004703A (en) * 1953-07-31 1961-10-17 El Re Ma S A Per Io Sfruttamen Calculating machine with polarized relays
US3009639A (en) * 1953-07-31 1961-11-21 El Re Ma S A Per Lo Sfruttamen Electrical calculation circuit
US3016196A (en) * 1958-11-06 1962-01-09 Bell Telephone Labor Inc Arithmetic carry generator
US3016191A (en) * 1956-02-13 1962-01-09 Brandt Automatic Cashier Co Coin sorter and computer
US3019980A (en) * 1956-12-13 1962-02-06 Brunsviga Maschinenwerke Ag Apparatus for the reception, storage, and re-emission of positive and negative numerical values, especially for use with standard office machines
US3328567A (en) * 1964-04-15 1967-06-27 Hitachi Ltd Digital adding and subtracting device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1515995A (en) * 1920-12-30 1924-11-18 Int Time Recording Co Ltd Electric multiplying machine
US2195267A (en) * 1936-02-06 1940-03-26 Bush Mfg Company Calculating machine
US2538826A (en) * 1949-03-15 1951-01-23 Marchant Calculating Machine Calculating machine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE528702C (de) * 1928-10-22 1931-07-02 Tabulating Machine Company Verfahren, Vorrichtung und elektrische Schaltungsweise zum Einstellen von Werten oder Symbolgroessen auf elektromagnetischem Wege
AT122164B (de) * 1928-11-03 1931-04-10 Tabulating Machine Company New Verfahren und Vorrichtung zur Auswertung von Aufzeichnungsträgern, vorzugsweise Registrierkarten u. dgl.
DE656497C (de) * 1933-04-21 1938-02-09 D Instr De Prec Soc Ind Verfahren und Tabelliermaschine zur Auswertung von Karten mit Lochkombinationen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1515995A (en) * 1920-12-30 1924-11-18 Int Time Recording Co Ltd Electric multiplying machine
US2195267A (en) * 1936-02-06 1940-03-26 Bush Mfg Company Calculating machine
US2538826A (en) * 1949-03-15 1951-01-23 Marchant Calculating Machine Calculating machine

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3004703A (en) * 1953-07-31 1961-10-17 El Re Ma S A Per Io Sfruttamen Calculating machine with polarized relays
US3004704A (en) * 1953-07-31 1961-10-17 El Re Ma S A Per Lo Sfruttamen Electrical calculating machine with operational groups of switching elements
US3009639A (en) * 1953-07-31 1961-11-21 El Re Ma S A Per Lo Sfruttamen Electrical calculation circuit
US2909993A (en) * 1954-11-18 1959-10-27 Ibm Printer for calculating unit
US3016191A (en) * 1956-02-13 1962-01-09 Brandt Automatic Cashier Co Coin sorter and computer
US3019980A (en) * 1956-12-13 1962-02-06 Brunsviga Maschinenwerke Ag Apparatus for the reception, storage, and re-emission of positive and negative numerical values, especially for use with standard office machines
US3016196A (en) * 1958-11-06 1962-01-09 Bell Telephone Labor Inc Arithmetic carry generator
US3328567A (en) * 1964-04-15 1967-06-27 Hitachi Ltd Digital adding and subtracting device

Also Published As

Publication number Publication date
GB727968A (en) 1955-04-13
DE944586C (de) 1956-06-21
FR1044719A (fr) 1953-11-20
CH287272A (de) 1952-11-30

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