FR2106625A1 - - Google Patents

Info

Publication number
FR2106625A1
FR2106625A1 FR7133416A FR7133416A FR2106625A1 FR 2106625 A1 FR2106625 A1 FR 2106625A1 FR 7133416 A FR7133416 A FR 7133416A FR 7133416 A FR7133416 A FR 7133416A FR 2106625 A1 FR2106625 A1 FR 2106625A1
Authority
FR
France
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.)
Granted
Application number
FR7133416A
Other languages
French (fr)
Other versions
FR2106625B1 (enExample
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.)
Ferranti International PLC
Original Assignee
Ferranti PLC
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 Ferranti PLC filed Critical Ferranti PLC
Publication of FR2106625A1 publication Critical patent/FR2106625A1/fr
Application granted granted Critical
Publication of FR2106625B1 publication Critical patent/FR2106625B1/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/24—Arrangements for performing computing operations, e.g. operational amplifiers for evaluating logarithmic or exponential functions, e.g. hyperbolic functions

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Software Systems (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Amplifiers (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
FR7133416A 1970-09-19 1971-09-16 Expired FR2106625B1 (enExample)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4472670 1970-09-19

Publications (2)

Publication Number Publication Date
FR2106625A1 true FR2106625A1 (enExample) 1972-05-05
FR2106625B1 FR2106625B1 (enExample) 1976-03-26

Family

ID=10434492

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7133416A Expired FR2106625B1 (enExample) 1970-09-19 1971-09-16

Country Status (5)

Country Link
US (1) US3736415A (enExample)
CA (1) CA941069A (enExample)
DE (1) DE2145885A1 (enExample)
FR (1) FR2106625B1 (enExample)
GB (1) GB1302056A (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51115750A (en) * 1975-04-04 1976-10-12 Hitachi Ltd Multiplication device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3540825A (en) * 1968-01-18 1970-11-17 Mcpherson Instr Corp Double beam spectrometer readout system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3453423A (en) * 1966-03-16 1969-07-01 Atomic Energy Commission Four quadrant logarithmic multiplier for time-dependent signals
US3532868A (en) * 1968-07-24 1970-10-06 Electronic Associates Log multiplier with logarithmic function generator connected in feedback loop of operational amplifier
US3584232A (en) * 1969-01-21 1971-06-08 Bell Telephone Labor Inc Precision logarithmic converter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3540825A (en) * 1968-01-18 1970-11-17 Mcpherson Instr Corp Double beam spectrometer readout system

Also Published As

Publication number Publication date
US3736415A (en) 1973-05-29
GB1302056A (enExample) 1973-01-04
FR2106625B1 (enExample) 1976-03-26
DE2145885A1 (de) 1972-03-23
CA941069A (en) 1974-01-29

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Legal Events

Date Code Title Description
ST Notification of lapse