GB1388596A - Conversion from fixed to floating point in electronic computers - Google Patents

Conversion from fixed to floating point in electronic computers

Info

Publication number
GB1388596A
GB1388596A GB5939272*A GB5939272A GB1388596A GB 1388596 A GB1388596 A GB 1388596A GB 5939272 A GB5939272 A GB 5939272A GB 1388596 A GB1388596 A GB 1388596A
Authority
GB
United Kingdom
Prior art keywords
floating point
fixed
conversion
electronic computers
april
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
GB5939272*A
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.)
Olivetti SpA
Original Assignee
Olivetti SpA
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 Olivetti SpA filed Critical Olivetti SpA
Publication of GB1388596A publication Critical patent/GB1388596A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K13/00—Conveying record carriers from one station to another, e.g. from stack to punching mechanism
    • G06K13/02—Conveying record carriers from one station to another, e.g. from stack to punching mechanism the record carrier having longitudinal dimension comparable with transverse dimension, e.g. punched card
    • G06K13/06—Guiding cards; Checking correct operation of card-conveying mechanisms
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F15/00—Digital computers in general; Data processing equipment in general
    • G06F15/02—Digital computers in general; Data processing equipment in general manually operated with input through keyboard and computation using a built-in program, e.g. pocket calculators
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/44—Arrangements for executing specific programs
    • G06F9/448—Execution paradigms, e.g. implementations of programming paradigms
    • G06F9/4482—Procedural
    • G06F9/4484—Executing subprograms
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/08—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Software Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Computing Systems (AREA)
  • Human Computer Interaction (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Computer Hardware Design (AREA)
  • Artificial Intelligence (AREA)
  • Complex Calculations (AREA)
  • Calculators And Similar Devices (AREA)
  • Time Recorders, Dirve Recorders, Access Control (AREA)
  • Shift Register Type Memory (AREA)
  • Input From Keyboards Or The Like (AREA)

Abstract

1388596 Digital calculator ING C OLIVETTI & C SpA 19 April 1972 [22 April 1971] 59392/72 Divided out of 1388593 Heading G4A The subject matter of this Specification is identical to that of Specification 1,388,593, but the claims relate to an arrangement for performing fixed to floating point conversions.
GB5939272*A 1971-04-22 1972-04-19 Conversion from fixed to floating point in electronic computers Expired GB1388596A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT6833671 1971-04-22

Publications (1)

Publication Number Publication Date
GB1388596A true GB1388596A (en) 1975-03-26

Family

ID=11309023

Family Applications (5)

Application Number Title Priority Date Filing Date
GB1822472A Expired GB1388593A (en) 1971-04-22 1972-04-19 Output format control for electronic computers
GB5939072*A Expired GB1388594A (en) 1971-04-22 1972-04-19 Digit limitation in a digital electronic computer
GB5939272*A Expired GB1388596A (en) 1971-04-22 1972-04-19 Conversion from fixed to floating point in electronic computers
GB5939172*A Expired GB1388595A (en) 1971-04-22 1972-04-19 Separation of exponent from mantissa preparatory to the conversion from floating point to fixed point
GB5939372*A Expired GB1388597A (en) 1971-04-22 1972-04-19 Read write structure for programme cards

Family Applications Before (2)

Application Number Title Priority Date Filing Date
GB1822472A Expired GB1388593A (en) 1971-04-22 1972-04-19 Output format control for electronic computers
GB5939072*A Expired GB1388594A (en) 1971-04-22 1972-04-19 Digit limitation in a digital electronic computer

Family Applications After (2)

Application Number Title Priority Date Filing Date
GB5939172*A Expired GB1388595A (en) 1971-04-22 1972-04-19 Separation of exponent from mantissa preparatory to the conversion from floating point to fixed point
GB5939372*A Expired GB1388597A (en) 1971-04-22 1972-04-19 Read write structure for programme cards

Country Status (6)

Country Link
CA (1) CA978653A (en)
CH (1) CH550438A (en)
DE (1) DE2220329C3 (en)
FR (1) FR2136620A5 (en)
GB (5) GB1388593A (en)
SU (1) SU568398A3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2296802A (en) * 1994-12-29 1996-07-10 Grass Valley Group Number format conversion

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4036430A (en) * 1976-05-13 1977-07-19 Ebco Industries, Ltd. Manually operable card reader
GB2142176A (en) * 1983-06-24 1985-01-09 Hawker Siddeley Revenue Contr Read and erase device
GB2241810A (en) * 1990-03-09 1991-09-11 Mars Inc Data card reader
US6266769B1 (en) 1998-04-30 2001-07-24 Intel Corporation Conversion between packed floating point data and packed 32-bit integer data in different architectural registers
US6263426B1 (en) 1998-04-30 2001-07-17 Intel Corporation Conversion from packed floating point data to packed 8-bit integer data in different architectural registers
DE10056047C1 (en) * 2000-11-11 2002-04-18 Bosch Gmbh Robert Automatic conversion of arithmetic term from floating to fixed point arithmetic involves combining operand, result normalizing factors into constants until number of constants minimized

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2296802A (en) * 1994-12-29 1996-07-10 Grass Valley Group Number format conversion
GB2296802B (en) * 1994-12-29 1999-06-16 Grass Valley Group Number format conversion apparatus for signal processing

Also Published As

Publication number Publication date
FR2136620A5 (en) 1972-12-22
GB1388594A (en) 1975-03-26
GB1388597A (en) 1975-03-26
GB1388595A (en) 1975-03-26
DE2220329B2 (en) 1981-06-11
CH550438A (en) 1974-06-14
DE2220329C3 (en) 1982-02-11
CA978653A (en) 1975-11-25
DE2220329A1 (en) 1972-10-26
SU568398A3 (en) 1977-08-05
GB1388593A (en) 1975-03-26

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Legal Events

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