GB1515282A - Electronic number selectors - Google Patents

Electronic number selectors

Info

Publication number
GB1515282A
GB1515282A GB1451874A GB1451874A GB1515282A GB 1515282 A GB1515282 A GB 1515282A GB 1451874 A GB1451874 A GB 1451874A GB 1451874 A GB1451874 A GB 1451874A GB 1515282 A GB1515282 A GB 1515282A
Authority
GB
United Kingdom
Prior art keywords
oscilator
15khz
april
switches
random number
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
GB1451874A
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.)
MCCRORY C
Original Assignee
MCCRORY C
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 MCCRORY C filed Critical MCCRORY C
Priority to GB1451874A priority Critical patent/GB1515282A/en
Publication of GB1515282A publication Critical patent/GB1515282A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G06F7/58—Random or pseudo-random number generators
    • G06F7/588—Random number generators, i.e. based on natural stochastic processes
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C15/00—Generating random numbers; Lottery apparatus
    • G07C15/006—Generating random numbers; Lottery apparatus electronically

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computational Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Measurement Of Unknown Time Intervals (AREA)

Abstract

1515282 Random number generators C F McCRORY 10 April 1975 [2 April 1974] 14518/74 Heading G4D A random number selector comprises a multi-stage counter 10a-n counting between preselected minimum and maximum values from a clock pulse generator 11 started by a push button 25 and stopped by a voltage applied at 32. The generator operates at 15kHz; the stopping voltage may be applied by a switch having an unpredictable time delay such as one with a suction holding device with an air leak. The counter counts up to a value set by switches 16a-n whereupon it is reset to a lower value set on switches 15a-n, repeatedly. A switch 33 provides zero setting. The oscilator 11 using feedback around a gate 12 may be replaced by a similar oscilator (Fig. 2a, not shown) which produces a 15kHz pulse train interrupted at intervals by much longer pulses whereby some numbers will be displayed by the counter display 14a-n during the selection process.
GB1451874A 1975-04-10 1975-04-10 Electronic number selectors Expired GB1515282A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1451874A GB1515282A (en) 1975-04-10 1975-04-10 Electronic number selectors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1451874A GB1515282A (en) 1975-04-10 1975-04-10 Electronic number selectors

Publications (1)

Publication Number Publication Date
GB1515282A true GB1515282A (en) 1978-06-21

Family

ID=10042658

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1451874A Expired GB1515282A (en) 1975-04-10 1975-04-10 Electronic number selectors

Country Status (1)

Country Link
GB (1) GB1515282A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2675292A1 (en) * 1991-04-10 1992-10-16 Brief Srl Method and apparatus for selecting at random
WO1994022113A1 (en) * 1993-03-25 1994-09-29 Schneider Philipp J Miniaturized electronic appliance
EP1114363A1 (en) * 1998-09-14 2001-07-11 Silicon Gaming-Nevada, Inc. Random number generator seeding method and apparatus
EP1239363A2 (en) * 2001-03-07 2002-09-11 Kabushiki Kaisha Toshiba Random number's seed generating circuit, driver having the same, and SD memory card system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2675292A1 (en) * 1991-04-10 1992-10-16 Brief Srl Method and apparatus for selecting at random
WO1994022113A1 (en) * 1993-03-25 1994-09-29 Schneider Philipp J Miniaturized electronic appliance
EP1114363A1 (en) * 1998-09-14 2001-07-11 Silicon Gaming-Nevada, Inc. Random number generator seeding method and apparatus
EP1114363A4 (en) * 1998-09-14 2002-09-18 Igt Reno Nev Random number generator seeding method and apparatus
US6502116B1 (en) 1998-09-14 2002-12-31 Igt Random number generator seeding method and apparatus
US6728740B2 (en) 1998-09-14 2004-04-27 Igt Random number generator seeding method and apparatus
EP1239363A2 (en) * 2001-03-07 2002-09-11 Kabushiki Kaisha Toshiba Random number's seed generating circuit, driver having the same, and SD memory card system
EP1239363A3 (en) * 2001-03-07 2005-01-19 Kabushiki Kaisha Toshiba Random number's seed generating circuit, driver having the same, and SD memory card system

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee