US2924381A - Digital differential analyzer - Google Patents

Digital differential analyzer Download PDF

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Publication number
US2924381A
US2924381A US283622A US28362252A US2924381A US 2924381 A US2924381 A US 2924381A US 283622 A US283622 A US 283622A US 28362252 A US28362252 A US 28362252A US 2924381 A US2924381 A US 2924381A
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US
United States
Prior art keywords
digital differential
differential analyzer
feb
sheet
sheets
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Expired - Lifetime
Application number
US283622A
Inventor
Donald E Eckdahl
John F Donan
Jr Albert E Wolfe
Richard E Sprague
Hrant H Sarkissian
Carl L Isborn
Bernard T Wilson
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.)
NCR Voyix Corp
National Cash Register Co
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NCR Corp
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Publication date
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Priority to US283622A priority Critical patent/US2924381A/en
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Publication of US2924381A publication Critical patent/US2924381A/en
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Expired - Lifetime legal-status Critical Current

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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
    • G06F7/60—Methods or arrangements for performing computations using a digital non-denominational number representation, i.e. number representation without radix; Computing devices using combinations of denominational and non-denominational quantity representations, e.g. using difunction pulse trains, STEELE computers, phase computers
    • G06F7/64—Digital differential analysers, i.e. computing devices for differentiation, integration or solving differential or integral equations, using pulses representing increments; Other incremental computing devices for solving difference equations
    • G06F7/66—Digital differential analysers, i.e. computing devices for differentiation, integration or solving differential or integral equations, using pulses representing increments; Other incremental computing devices for solving difference equations wherein pulses represent unitary increments only

Description

Feb. 9, 1960 D. E. ECKDAHI.v ETAL 2,924,381
` DIGITAL DIFFERENTIAL ANALYZER Filed April 22, 1952 48fsheets-sheet 1 Feb. 9, 1960 D. E. ECKDAHL ETAL 2,924,381
l DIGITAL DIFFERENTIAL ANALYZER l Filed April 22, 1952 4a sheets-sheet 2 Feb. 9, 1960 I Filed April 22, 1952 D. E. ECKDAHL ET AL DIGITAL DIFFERENTIAL ANALYZER 48 Sheets-Sheet 3 Feb. 9, 1960' n. E. EcKDAHL Erm. 2,924,381
DIGITAL DIFFERENTIAL ANALYZER .48 Sheets-Sheet 4 Filed April 22, 1952 Feb. 9, 1960 48 Sheets-Sheet 5 Filed April 22. 1952 QINM $4-1. fw. uw
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DIGITAL DIFFERENTIAL ANALYZFR Filed April 22', 1952 4s sheets-sheet s vrfA/r #fran/mere Feb. 9, 1960 D. E. ECKDAHL ETAL DIGITAL DIFFERENTIAL ANALYZER Filed April 22,' 1952 48 Sheets-Sheet 7 Feb. 9, 1960 D. E. EcKDAHL ET AL 2,924,381
DIGITAL DIFFERENTIAL ANALYZER Filed April 22, 1952 48 Sheets-Sheet 8 -Feb- 9, 1960 E. EcKDAHL vE'r AL 2,924,381
DIGITAL DIFFERENTIAL ANALYZER 48 Sheets-Sheet 9 Filed April 22, 1952 Feb.9, 1960 Filed April 22, 1952 D. E. ECK'DAHL ETAL DIGITAL DIFFERENTIAL ANALYZER 48 Sheets-Sheet 10 Feb. 9, 1960 D. E. ECKDAHL ET AL 2,924,381
DIGITAL DIFFERENTIAL ANALYZER Filed April 22, 1952 48 Sheets-Sheet 11 Feb. 9, 1960 Filed April 22, 1952 DqE. l-:cKDAHL ET AL 2,924,381
DIGxTAL DIFFERENTIAL ANALYZER 48 Sheets-Sheet 12 l @ya `feb. 9, 1960 Filed April 22, 1952 D. E. EcKDAl-n. ET AL 2,924,381 DIGITAL DIFFERENTIAL ANALYZER 48 Sheets-Sheet 13 v Feb. 9, 1960 D. E. EcKDAHL ETAL 2,924,381
DIGITAL DIFFERENTIAL ANALYZER Filed April 22, 1952 48 Sheets-Sheet 14 sb. m\ Q AI Feb. 9, 1960 v D. E. ECKDAHL ET'AL 2,924,381
DIGITAL DIFFERENTIAL ANALYZER Filed A-pril 22, 1952 48 Sheets-Sheet 15 +265v. o o
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DIGITAL DIFFERENTIAL ANALYZER Filed April 22, 1952 Feb. s, 19Go Filed Aprilv 22 1952 D. E. ECKDAHL ETAL DIGITAL DIFFERENTIAL ANALYZER 48 Sheets-Sheet 18l Feb. 9, 1960 D. E. ECKDAHL Erm. 2,924,381
DIGITAL DIFFERENTIAL ANALYZER Filed April' '22. 1952 42?'S1fxeecs-Shee1kl 19 i la! l T275 L 8f
US283622A 1952-04-22 1952-04-22 Digital differential analyzer Expired - Lifetime US2924381A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3027081A (en) * 1958-12-31 1962-03-27 Ibm Overlap mode control
US3137787A (en) * 1959-05-14 1964-06-16 Emi Ltd Digital differential analyzers
US3147371A (en) * 1957-03-25 1964-09-01 Digital Control Systems Inc Simplified methods and apparatus for digital computation
US3155816A (en) * 1957-11-08 1964-11-03 Gen Precision Inc Digital computer
US3313925A (en) * 1956-05-11 1967-04-11 Gen Precision Inc Digital differential analyzer
US20110037822A1 (en) * 2009-08-11 2011-02-17 Conexant Systems, Inc. Systems and Methods for Alignment of Laser Printers

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US2435841A (en) * 1944-01-05 1948-02-10 Rca Corp Computing device
US2476066A (en) * 1948-05-06 1949-07-12 Sylvania Electric Prod Crystal matrix
US2521350A (en) * 1947-11-24 1950-09-05 Ibm Electronic counter
US2539623A (en) * 1947-02-12 1951-01-30 Bell Telephone Labor Inc Communication system
US2540654A (en) * 1948-03-25 1951-02-06 Engineering Res Associates Inc Data storage system
FR975941A (en) * 1948-09-22 1951-03-12 Electronique & Automatisme Sa Pulse counters
US2549071A (en) * 1949-09-10 1951-04-17 Lawton Products Company Inc Space reservation system
US2557729A (en) * 1948-07-30 1951-06-19 Eckert Mauchly Comp Corp Impulse responsive network
US2564403A (en) * 1949-01-27 1951-08-14 Teleregister Corp Electrical and cyclical data posting system
US2568932A (en) * 1947-09-27 1951-09-25 Rca Corp Electronic cumulative adder
US2575342A (en) * 1949-06-02 1951-11-20 Darrin H Gridley Position sensing device
US2584811A (en) * 1944-12-27 1952-02-05 Ibm Electronic counting circuit
US2585630A (en) * 1949-05-03 1952-02-12 Remington Rand Inc Digit shifting circuit
US2587532A (en) * 1948-05-05 1952-02-26 Teleregister Corp System for magnetic storage of data
US2594731A (en) * 1949-07-14 1952-04-29 Teleregister Corp Apparatus for displaying magnetically stored data
US2595378A (en) * 1949-05-23 1952-05-06 Int Standard Electric Corp Selective system
US2603123A (en) * 1950-03-04 1952-07-15 American Cyanamid Co Tristimulus integrator
US2609143A (en) * 1948-06-24 1952-09-02 George R Stibitz Electronic computer for addition and subtraction
US2609439A (en) * 1949-09-20 1952-09-02 Teleregister Corp Indicator setting mechanism operable by means of character comparisons
US2611813A (en) * 1948-05-26 1952-09-23 Technitrol Engineering Company Magnetic data storage system
US2614169A (en) * 1950-07-24 1952-10-14 Engineering Res Associates Inc Storage and relay system
US2617704A (en) * 1947-07-15 1952-11-11 Bell Telephone Labor Inc Recording system
US2632845A (en) * 1950-12-22 1953-03-24 Rca Corp Coincidence indicator
US2636133A (en) * 1950-12-01 1953-04-21 Bell Telephone Labor Inc Diode gate
US2637812A (en) * 1949-06-14 1953-05-05 Northrop Aircraft Inc Electronic pulse spacer
US2644867A (en) * 1951-04-18 1953-07-07 Speed Dev Company Ltd Fluid pressure operated switch
US2652554A (en) * 1949-03-01 1953-09-15 Nat Res Dev Magnetic storage system for electronic binary digital computers
US2655598A (en) * 1950-10-21 1953-10-13 Eckert Mauchly Comp Corp Signal processing apparatus
US2675427A (en) * 1951-12-21 1954-04-13 Bell Telephone Labor Inc Electrostatic scanning mechanism for scanning both tips and rings of calling lines and combining the results of these scanning operations
US2680239A (en) * 1952-02-26 1954-06-01 Engineering Res Associates Inc Data selection system
US2700755A (en) * 1951-11-09 1955-01-25 Monroe Calculating Machine Keyboard checking circuit
US2700504A (en) * 1949-10-31 1955-01-25 Nat Res Dev Electronic device for the multiplication of binary-digital numbers
US2701095A (en) * 1949-02-12 1955-02-01 George R Stibitz Electronic computer for division
US2703202A (en) * 1949-04-14 1955-03-01 Ibm Electronic binary algebraic accumulator
US2719670A (en) * 1949-10-18 1955-10-04 Jacobs Electrical and electronic digital computers
US2737342A (en) * 1948-08-04 1956-03-06 Teleregister Corp Rotary magnetic data storage system
US2739299A (en) * 1951-05-25 1956-03-20 Monroe Calculating Machine Magnetic storage systems for computers and the like
US2749037A (en) * 1950-04-21 1956-06-05 George R Stibitz Electronic computer for multiplication
US2775402A (en) * 1951-05-25 1956-12-25 Weiss Eric Coded decimal summer
US2787416A (en) * 1951-10-23 1957-04-02 Hughes Aircraft Co Electrical calculating machines
US2796218A (en) * 1949-06-22 1957-06-18 Nat Res Dev Electronic computing devices with subsidiary storage
US2815168A (en) * 1951-11-14 1957-12-03 Hughes Aircraft Co Automatic program control system for a digital computer
US2841328A (en) * 1950-03-06 1958-07-01 Northrop Aircraft Inc Digital differential analyzer
US2850232A (en) * 1951-12-26 1958-09-02 Northrop Aircraft Inc Machine for digital differential analysis

Patent Citations (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2435841A (en) * 1944-01-05 1948-02-10 Rca Corp Computing device
US2584811A (en) * 1944-12-27 1952-02-05 Ibm Electronic counting circuit
US2539623A (en) * 1947-02-12 1951-01-30 Bell Telephone Labor Inc Communication system
US2617704A (en) * 1947-07-15 1952-11-11 Bell Telephone Labor Inc Recording system
US2568932A (en) * 1947-09-27 1951-09-25 Rca Corp Electronic cumulative adder
US2521350A (en) * 1947-11-24 1950-09-05 Ibm Electronic counter
US2540654A (en) * 1948-03-25 1951-02-06 Engineering Res Associates Inc Data storage system
US2587532A (en) * 1948-05-05 1952-02-26 Teleregister Corp System for magnetic storage of data
US2476066A (en) * 1948-05-06 1949-07-12 Sylvania Electric Prod Crystal matrix
US2611813A (en) * 1948-05-26 1952-09-23 Technitrol Engineering Company Magnetic data storage system
US2609143A (en) * 1948-06-24 1952-09-02 George R Stibitz Electronic computer for addition and subtraction
US2557729A (en) * 1948-07-30 1951-06-19 Eckert Mauchly Comp Corp Impulse responsive network
US2737342A (en) * 1948-08-04 1956-03-06 Teleregister Corp Rotary magnetic data storage system
FR975941A (en) * 1948-09-22 1951-03-12 Electronique & Automatisme Sa Pulse counters
US2564403A (en) * 1949-01-27 1951-08-14 Teleregister Corp Electrical and cyclical data posting system
US2701095A (en) * 1949-02-12 1955-02-01 George R Stibitz Electronic computer for division
US2652554A (en) * 1949-03-01 1953-09-15 Nat Res Dev Magnetic storage system for electronic binary digital computers
US2703202A (en) * 1949-04-14 1955-03-01 Ibm Electronic binary algebraic accumulator
US2585630A (en) * 1949-05-03 1952-02-12 Remington Rand Inc Digit shifting circuit
US2595378A (en) * 1949-05-23 1952-05-06 Int Standard Electric Corp Selective system
US2575342A (en) * 1949-06-02 1951-11-20 Darrin H Gridley Position sensing device
US2637812A (en) * 1949-06-14 1953-05-05 Northrop Aircraft Inc Electronic pulse spacer
US2796218A (en) * 1949-06-22 1957-06-18 Nat Res Dev Electronic computing devices with subsidiary storage
US2594731A (en) * 1949-07-14 1952-04-29 Teleregister Corp Apparatus for displaying magnetically stored data
US2549071A (en) * 1949-09-10 1951-04-17 Lawton Products Company Inc Space reservation system
US2609439A (en) * 1949-09-20 1952-09-02 Teleregister Corp Indicator setting mechanism operable by means of character comparisons
US2719670A (en) * 1949-10-18 1955-10-04 Jacobs Electrical and electronic digital computers
US2700504A (en) * 1949-10-31 1955-01-25 Nat Res Dev Electronic device for the multiplication of binary-digital numbers
US2603123A (en) * 1950-03-04 1952-07-15 American Cyanamid Co Tristimulus integrator
US2841328A (en) * 1950-03-06 1958-07-01 Northrop Aircraft Inc Digital differential analyzer
US2749037A (en) * 1950-04-21 1956-06-05 George R Stibitz Electronic computer for multiplication
US2614169A (en) * 1950-07-24 1952-10-14 Engineering Res Associates Inc Storage and relay system
US2655598A (en) * 1950-10-21 1953-10-13 Eckert Mauchly Comp Corp Signal processing apparatus
US2636133A (en) * 1950-12-01 1953-04-21 Bell Telephone Labor Inc Diode gate
US2632845A (en) * 1950-12-22 1953-03-24 Rca Corp Coincidence indicator
US2644867A (en) * 1951-04-18 1953-07-07 Speed Dev Company Ltd Fluid pressure operated switch
US2739299A (en) * 1951-05-25 1956-03-20 Monroe Calculating Machine Magnetic storage systems for computers and the like
US2775402A (en) * 1951-05-25 1956-12-25 Weiss Eric Coded decimal summer
US2787416A (en) * 1951-10-23 1957-04-02 Hughes Aircraft Co Electrical calculating machines
US2700755A (en) * 1951-11-09 1955-01-25 Monroe Calculating Machine Keyboard checking circuit
US2815168A (en) * 1951-11-14 1957-12-03 Hughes Aircraft Co Automatic program control system for a digital computer
US2675427A (en) * 1951-12-21 1954-04-13 Bell Telephone Labor Inc Electrostatic scanning mechanism for scanning both tips and rings of calling lines and combining the results of these scanning operations
US2850232A (en) * 1951-12-26 1958-09-02 Northrop Aircraft Inc Machine for digital differential analysis
US2680239A (en) * 1952-02-26 1954-06-01 Engineering Res Associates Inc Data selection system

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3313925A (en) * 1956-05-11 1967-04-11 Gen Precision Inc Digital differential analyzer
US3147371A (en) * 1957-03-25 1964-09-01 Digital Control Systems Inc Simplified methods and apparatus for digital computation
US3155816A (en) * 1957-11-08 1964-11-03 Gen Precision Inc Digital computer
US3027081A (en) * 1958-12-31 1962-03-27 Ibm Overlap mode control
US3137787A (en) * 1959-05-14 1964-06-16 Emi Ltd Digital differential analyzers
US20110037822A1 (en) * 2009-08-11 2011-02-17 Conexant Systems, Inc. Systems and Methods for Alignment of Laser Printers
US20110149010A1 (en) * 2009-08-11 2011-06-23 Conexant Systems, Inc. Systems and methods for alignment of laser printers
US8289358B2 (en) 2009-08-11 2012-10-16 Conexant Systems, Inc. Systems and methods for alignment of laser printers
US8363082B2 (en) 2009-08-11 2013-01-29 Conexant Systems, Inc. Systems and methods for alignment of laser printers

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