GB722509A - Electrical calculating apparatus - Google Patents

Electrical calculating apparatus

Info

Publication number
GB722509A
GB722509A GB13850/51A GB1385051A GB722509A GB 722509 A GB722509 A GB 722509A GB 13850/51 A GB13850/51 A GB 13850/51A GB 1385051 A GB1385051 A GB 1385051A GB 722509 A GB722509 A GB 722509A
Authority
GB
United Kingdom
Prior art keywords
relay
contacts
entered
energized
digit
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
Application number
GB13850/51A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Compagnie des Machines Bull SA
Original Assignee
Compagnie des Machines Bull SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Compagnie des Machines Bull SA filed Critical Compagnie des Machines Bull SA
Publication of GB722509A publication Critical patent/GB722509A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
    • G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
    • G06F11/1008—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices
    • G06F11/1012—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices using codes or arrangements adapted for a specific type of error
    • G06F11/104—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices using codes or arrangements adapted for a specific type of error using arithmetic codes, i.e. codes which are preserved during operation, e.g. modulo 9 or 11 check
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Computational Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Computing Systems (AREA)
  • Electromagnetism (AREA)
  • Quality & Reliability (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)
  • Relay Circuits (AREA)
GB13850/51A 1950-06-15 1951-06-11 Electrical calculating apparatus Expired GB722509A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1020239T 1950-06-15

Publications (1)

Publication Number Publication Date
GB722509A true GB722509A (en) 1955-01-26

Family

ID=9576205

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13850/51A Expired GB722509A (en) 1950-06-15 1951-06-11 Electrical calculating apparatus

Country Status (4)

Country Link
US (1) US2776091A (enrdf_load_stackoverflow)
FR (1) FR1020239A (enrdf_load_stackoverflow)
GB (1) GB722509A (enrdf_load_stackoverflow)
NL (1) NL87833C (enrdf_load_stackoverflow)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2886239A (en) * 1954-02-16 1959-05-12 Willem Hendrik Theodorus Helmi Check symbol computer
NL197751A (enrdf_load_stackoverflow) * 1954-06-04
US3098994A (en) * 1956-10-26 1963-07-23 Itt Self checking digital computer system
US2969912A (en) * 1957-02-26 1961-01-31 Ibm Error detecting and correcting circuits
US3017091A (en) * 1957-03-26 1962-01-16 Bell Telephone Labor Inc Digital error correcting systems
US3431406A (en) * 1958-07-03 1969-03-04 Sperry Rand Corp Check digit verifiers
US3191009A (en) * 1961-08-17 1965-06-22 Sperry Rand Corp Check digit verifiers
US3448254A (en) * 1965-07-28 1969-06-03 Anker Werke Ag Data checking system

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL67277C (enrdf_load_stackoverflow) * 1939-09-21
US2364540A (en) * 1942-10-10 1944-12-05 Ibm Calculating machine
FR984488A (fr) * 1943-10-04 1951-07-06 Appareil électrique de calculs arithmétiques
US2436178A (en) * 1943-10-21 1948-02-17 Rca Corp Electronic computer for transforming polar into rectilinear coordinates
US2428811A (en) * 1943-10-30 1947-10-14 Rca Corp Electronic computing device
US2404250A (en) * 1944-01-22 1946-07-16 Rca Corp Computing system
US2434499A (en) * 1944-11-10 1948-01-13 Ibm Relay computing mechanism
NL77661C (enrdf_load_stackoverflow) * 1945-09-29
BE489673A (enrdf_load_stackoverflow) * 1947-02-26
US2502360A (en) * 1947-03-14 1950-03-28 Bell Telephone Labor Inc Electronic computer
US2538636A (en) * 1947-12-31 1951-01-16 Bell Telephone Labor Inc Digital computer
GB654098A (en) * 1948-04-27 1951-06-06 Standard Telephones Cables Ltd Improvements in or relating to systems for automatically recording reservations of accommodation

Also Published As

Publication number Publication date
FR1020239A (fr) 1953-02-03
US2776091A (en) 1957-01-01
NL87833C (enrdf_load_stackoverflow)

Similar Documents

Publication Publication Date Title
GB828130A (en) Magnetically actuated electric switch apparatus
GB722509A (en) Electrical calculating apparatus
GB1402490A (en) Hybrid switching devices for alternating currents
GB843225A (en) Improvements in or relating to electrical systems for determining the condition of electrical devices
US2291036A (en) Selecting system
US3067363A (en) Pulse frequency divider
US2550624A (en) Means for simultaneously closing a plurality of circuits
US2306087A (en) Key pulsing register circuit
US2586999A (en) Contact sequence test set
US2444156A (en) Peg count metering arrangement
US3054090A (en) Coincidence circuit
US2449224A (en) Electrical circuit control
GB1025396A (en) Improvements in electrical relay circuits
US3387186A (en) Relay counting chain
US3019297A (en) Party line identification apparatus
US2345925A (en) Pulse-counting circuit
US2580082A (en) Relay translating circuit
GB784751A (en) Check circuit for electronic ciphering arrangement for teleprinter signals
US1795650A (en) Remote-control system
SU886023A1 (ru) Устройство дл визуального представлени выходных данных
US3214522A (en) Relay arrangement for the reception and repetition of impulse trains
US2424582A (en) Electrical signalling system with remote control
GB900419A (en) An electrical translating circuit for translating digital information from a formal non-decimal numbering system into a decimal numbering system
US3370206A (en) Relay flip-flop
GB468040A (en) Improvements in or relating to electric summating apparatus