GB761878A - Improvements in or relating to digital computing apparatus - Google Patents

Improvements in or relating to digital computing apparatus

Info

Publication number
GB761878A
GB761878A GB3187753A GB3187753A GB761878A GB 761878 A GB761878 A GB 761878A GB 3187753 A GB3187753 A GB 3187753A GB 3187753 A GB3187753 A GB 3187753A GB 761878 A GB761878 A GB 761878A
Authority
GB
United Kingdom
Prior art keywords
drum
digits
numbers
stored
read
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
GB3187753A
Inventor
Edmund Harry Cooke-Yarborough
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.)
UK Atomic Energy Authority
Original Assignee
UK Atomic Energy Authority
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 UK Atomic Energy Authority filed Critical UK Atomic Energy Authority
Priority to GB3187753A priority Critical patent/GB761878A/en
Priority to US469513A priority patent/US2963223A/en
Publication of GB761878A publication Critical patent/GB761878A/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
    • G06F7/38—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation
    • G06F7/48—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using non-contact-making devices, e.g. tube, solid state device; using unspecified devices
    • G06F7/50—Adding; Subtracting
    • G06F7/504—Adding; Subtracting in bit-serial fashion, i.e. having a single digit-handling circuit treating all denominations after each other
    • G06F7/5045—Adding; Subtracting in bit-serial fashion, i.e. having a single digit-handling circuit treating all denominations after each other for multiple operands
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2207/00—Indexing scheme relating to methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F2207/38—Indexing scheme relating to groups G06F7/38 - G06F7/575
    • G06F2207/48—Indexing scheme relating to groups G06F7/48 - G06F7/575
    • G06F2207/4802—Special implementations
    • G06F2207/481—Counters performing arithmetic operations

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computational Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computing Systems (AREA)
  • Mathematical Optimization (AREA)
  • General Engineering & Computer Science (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

761,878. Digital electric calculating-apparatus. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Nov. 17, 1954 [Nov. 17, 1953], No. 31877/53. Class 106 (1). In a digital computing machine binary numbers are stored in an interlaced manner on a drum, the binary words ARTIST, BUFFER, CONVOY, and DECIDE being stored as shown in Fig. 2, reading anti-clockwise, and a combined binary counter and shifting register is provided for adding at least two-of the numbers as they are read from the drum. For the addition of two numbers as shown, gates G<SP>1</SP>, G<SP>2</SP> and G3 are suitably controlled by control pulses read from the drum by a head 23, so that only the digits of the selected words pass through the gates G<SP>1</SP> and G<SP>2</SP> from the reading head 22 and so that the digits of the sum, each of which is stored by a flip-flop ST for one sector time, are recorded in a selected position on the drum. As the lowest order (2‹) digits of the selected words to be added are read they are passed to a binary counter AD, the contents of which are shifted one stage in the direction of decreasing significance at the end of each sector time, the least significant digit being passed to the flip-flop ST and the remaining digits (if any) . acting as carry digits. In this way addition of two or more numbers takes only one revolution of the drum and no auxiliary storage devices are needed.
GB3187753A 1953-11-17 1953-11-17 Improvements in or relating to digital computing apparatus Expired GB761878A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB3187753A GB761878A (en) 1953-11-17 1953-11-17 Improvements in or relating to digital computing apparatus
US469513A US2963223A (en) 1953-11-17 1954-11-17 Multiple input binary adder employing magnetic drum digital computing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3187753A GB761878A (en) 1953-11-17 1953-11-17 Improvements in or relating to digital computing apparatus

Publications (1)

Publication Number Publication Date
GB761878A true GB761878A (en) 1956-11-21

Family

ID=10329730

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3187753A Expired GB761878A (en) 1953-11-17 1953-11-17 Improvements in or relating to digital computing apparatus

Country Status (1)

Country Link
GB (1) GB761878A (en)

Similar Documents

Publication Publication Date Title
GB802188A (en) Electrical apparatus for use in controlling the composition of data to be read out seriatim during a read out routine from a data storage device to an output device
GB1365783A (en) Addition subtraction device utilizing memory means
FI41467B (en)
GB761878A (en) Improvements in or relating to digital computing apparatus
GB1241983A (en) Electronic computer
GB745907A (en) Improvements in or relating to electronic apparatus for translating a number from a first to a second radix of notation
GB896129A (en) Data storage device
GB1151847A (en) Divider and Radix Converter Incorporating such a Divider
GB977430A (en) Apparatus to generate an electrical binary representation of a number from a succession of electrical binary representations of decimal digits of the number
GB876180A (en) Input/output equipment
GB902030A (en) Variable exponent computer
GB1031202A (en) Universal code translator
GB865219A (en) Apparatus for storing information
GB866571A (en) Digital electric dividing apparatus
GB1188660A (en) Data Transmission
GB1371322A (en) Data processing system
GB869466A (en) Improvements relating to output converters for digital computers
GB1428211A (en) Numerical data input apparatus
GB738314A (en) Improvements in or relating to electronic adding circuits
GB1342752A (en) Inventory control device
GB895725A (en) Improvements in or relating to data storage systems
GB927930A (en) Improvements in or relating to single channel circulating memories for digital data
JPS5759244A (en) Data processing circuit
GB795818A (en) A numeral storer for electro-mechanically operated book-keeping, calculating or the like machines
GB1072764A (en) Masking arrangement for digital computer apparatus