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GB845216A - Improvements in or relating to electrical calculating circuits - Google Patents

Improvements in or relating to electrical calculating circuits

Info

Publication number
GB845216A
GB845216A GB1941057A GB1941057A GB845216A GB 845216 A GB845216 A GB 845216A GB 1941057 A GB1941057 A GB 1941057A GB 1941057 A GB1941057 A GB 1941057A GB 845216 A GB845216 A GB 845216A
Authority
GB
United Kingdom
Prior art keywords
digit
record
adder
added
signal
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
GB1941057A
Inventor
Frederick Harry Bray
David Gerald Bryan
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.)
STC PLC
Original Assignee
Standard Telephone and Cables 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
Priority to BE568569D priority Critical patent/BE568569A/xx
Priority to BE527413D priority patent/BE527413A/xx
Priority to BE530180D priority patent/BE530180A/xx
Priority to NL85732D priority patent/NL85732C/xx
Priority to BE527585D priority patent/BE527585A/xx
Priority to NL99218D priority patent/NL99218C/xx
Priority to BE511585D priority patent/BE511585A/xx
Priority to NL96174D priority patent/NL96174C/xx
Priority to NL228663D priority patent/NL228663A/xx
Priority to US2927305D priority patent/US2927305A/en
Priority to BE532922D priority patent/BE532922A/xx
Priority to NL191886D priority patent/NL191886A/xx
Priority to NL220663D priority patent/NL220663A/xx
Priority to GB12818/52A priority patent/GB744358A/en
Priority to GB12060/51A priority patent/GB744352A/en
Priority to GB12816/52A priority patent/GB744356A/en
Priority to GB12817/52A priority patent/GB744357A/en
Priority to GB21248/54A priority patent/GB744400A/en
Priority to US289383A priority patent/US2838745A/en
Priority to US289385A priority patent/US2868447A/en
Priority to US289386A priority patent/US2865563A/en
Priority to CH320958D priority patent/CH320958A/en
Priority to CH329941D priority patent/CH329941A/en
Priority to DEI5891A priority patent/DE1120184B/en
Priority to CH320959D priority patent/CH320959A/en
Priority to CH322831D priority patent/CH322831A/en
Priority to CH317179D priority patent/CH317179A/en
Priority to FR1065479D priority patent/FR1065479A/en
Priority to CH320960D priority patent/CH320960A/en
Priority to GB22653/53A priority patent/GB746672A/en
Priority to GB7833/53A priority patent/GB765666A/en
Priority to GB7832/53A priority patent/GB765665A/en
Priority to GB7831/53A priority patent/GB765664A/en
Priority to GB4717/54A priority patent/GB786723A/en
Priority to GB8231/53A priority patent/GB786721A/en
Priority to GB18843/53A priority patent/GB786722A/en
Priority to GB30095/53A priority patent/GB760239A/en
Priority to US417106A priority patent/US2932009A/en
Priority to US417071A priority patent/US3130300A/en
Priority to US417107A priority patent/US3025351A/en
Priority to US417193A priority patent/US3001021A/en
Priority to FR66637D priority patent/FR66637E/en
Priority to CH337571D priority patent/CH337571A/en
Priority to DEI8414A priority patent/DE1016768B/en
Priority to DEI8411A priority patent/DE955429C/en
Priority to DEI8412A priority patent/DE973024C/en
Priority to DEI8413A priority patent/DE970229C/en
Priority to FR69051D priority patent/FR69051E/en
Priority to DEI8445A priority patent/DE1025447B/en
Priority to CH332298D priority patent/CH332298A/en
Priority to CH332299D priority patent/CH332299A/en
Priority to GB9329/54A priority patent/GB786724A/en
Priority to FR69052D priority patent/FR69052E/en
Priority to CH361829D priority patent/CH361829A/en
Priority to DEI8883A priority patent/DE1088089B/en
Priority to FR69054D priority patent/FR69054E/en
Priority to FR69056D priority patent/FR69056E/en
Priority to FR72305D priority patent/FR72305E/en
Priority to FR72306D priority patent/FR72306E/en
Priority to US511093A priority patent/US2807004A/en
Priority to FR72307D priority patent/FR72307E/en
Priority to GB18346/55A priority patent/GB794126A/en
Priority to FR72309D priority patent/FR72309E/en
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB1941057A priority patent/GB845216A/en
Priority to US740435A priority patent/US3039683A/en
Priority to FR768329A priority patent/FR73752E/en
Priority to DEI15002A priority patent/DE1082435B/en
Publication of GB845216A publication Critical patent/GB845216A/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
    • G06F7/491—Computations with decimal numbers radix 12 or 20.
    • G06F7/492—Computations with decimal numbers radix 12 or 20. using a binary weighted representation within each denomination
    • G06F7/493—Computations with decimal numbers radix 12 or 20. using a binary weighted representation within each denomination the representation being the natural binary coded representation, i.e. 8421-code
    • G06F7/494—Adding; Subtracting
    • G06F7/495—Adding; Subtracting in digit-serial fashion, i.e. having a single digit-handling circuit treating all denominations after each other
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/14—Handling requests for interconnection or transfer
    • G06F13/16—Handling requests for interconnection or transfer for access to memory bus
    • G06F13/1668—Details of memory controller
    • G06F13/1689—Synchronisation and timing concerns
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/14—Digital recording or reproducing using self-clocking codes
    • G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
    • G11B20/1407—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol
    • G11B20/1419—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol to or from biphase level coding, i.e. to or from codes where a one is coded as a transition from a high to a low level during the middle of a bit cell and a zero is encoded as a transition from a low to a high level during the middle of a bit cell or vice versa, e.g. split phase code, Manchester code conversion to or from biphase space or mark coding, i.e. to or from codes where there is a transition at the beginning of every bit cell and a one has no second transition and a zero has a second transition one half of a bit period later or vice versa, e.g. double frequency code, FM code
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/14—Digital recording or reproducing using self-clocking codes
    • G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
    • G11B20/1423—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/16—Digital recording or reproducing using non self-clocking codes, i.e. the clock signals are either recorded in a separate clocking track or in a combination of several information tracks
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
    • G11C11/21—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements
    • G11C11/22—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using ferroelectric elements
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/02—Conversion to or from weighted codes, i.e. the weight given to a digit depending on the position of the digit within the block or code word
    • H03M7/06—Conversion to or from weighted codes, i.e. the weight given to a digit depending on the position of the digit within the block or code word the radix thereof being a positive integer different from two
    • H03M7/08—Conversion to or from weighted codes, i.e. the weight given to a digit depending on the position of the digit within the block or code word the radix thereof being a positive integer different from two the radix being ten, i.e. pure decimal code
    • 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
    • G06F2207/492—Indexing scheme relating to groups G06F7/492 - G06F7/496
    • G06F2207/4923—Incrementer or decrementer

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computing Systems (AREA)
  • Computational Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Meter Arrangements (AREA)

Abstract

845,216. Digital electric calculating-apparatus. STANDARD TELEPHONES & CABLES Ltd. June 13, 1958 [June 20, 1957], No. 19410/57. Class 106 (1). In an electric calculating circuit for adding " 1 " to a number of which each digit is expressed as a multi-element code combination, comprising means for adding " 1 " to a digit of the number, if the addition produces the code combination representing the radix of the number, this combination is replaced by the combination which represents zero and " 1 " is added to the next higher digit of the number. As described, the circuit forms part of a subscriber's metering arrangement in an automatic telephone system, e.g. as described in Specification 841,949. The arrangement includes a ferrite matrix store (not shown) in which each storage cell corresponds to a different subscriber; when a cell is operated by a meter pulse, it causes a section of a track on a magnetic drum containing the corresponding meter record to be selected, such record then being applied serially in the form of " 0 " and " 1 " signals on lines R0, R1 to the unit adding circuit shown. Each record comprises 20 bits meshed by corresponding timing signals TA1 (not shown) to TA20, including a number (to which " 1 " is to be added) comprising 4 binary coded decimal digits in positions TA4-TA7, TA8- TA11, TA12-TA15 and TA16-TA19 repectively. The unit adder comprises gating network G1-G8 which, if bistable trigger DO is set to DOO, reverses each bit received up to and including the first " 0," DO then being reset by signal RO to DO1. The decimal digits from the adder are set up in turn on pattern movement stepping register DS1-DS4 and are normally transferred therefrom to temporary store WS1-WS20 comprising a further stepping register for storing the complete new record; if however, the output of the adder is binary 1010 (representing " 10 "), test gate G9 causes trigger DR to be set to DR1 whereby gate G11 is operated to enter " 0 " in the temporary store instead of the digit in DS1-DS4, and DO is again set to DOO to cause " 1 " to be added to the next higher decimal digit. The add " 1 " operation is initiated by signal CF1 which sets CC to CC1 so as open gates G3, G6 and to allow clock pulses PA from the drum to step the registers, and the new record is subsequently extracted from register WS1-WS20 by signal RI1. Specifications 791,156 and 791,157 also are referred to.
GB1941057A 1951-05-23 1957-06-20 Improvements in or relating to electrical calculating circuits Expired GB845216A (en)

Priority Applications (67)

Application Number Priority Date Filing Date Title
BE568569D BE568569A (en) 1951-05-23
BE527413D BE527413A (en) 1951-05-23
BE530180D BE530180A (en) 1951-05-23
NL85732D NL85732C (en) 1951-05-23
BE527585D BE527585A (en) 1951-05-23
NL99218D NL99218C (en) 1951-05-23
BE511585D BE511585A (en) 1951-05-23
NL96174D NL96174C (en) 1951-05-23
NL228663D NL228663A (en) 1951-05-23
US2927305D US2927305A (en) 1951-05-23 Timing equipment
BE532922D BE532922A (en) 1951-05-23
NL191886D NL191886A (en) 1951-05-23
NL220663D NL220663A (en) 1951-05-23
GB12818/52A GB744358A (en) 1951-05-23 1951-05-23 Improvements in or relating to telephone subscriber's metering equipment
GB12060/51A GB744352A (en) 1953-03-20 1951-05-23 Improvements in or relating to intelligence storage equipment
GB12816/52A GB744356A (en) 1951-05-23 1951-05-23 Improvements in or relating to electric circuits for combining items of intelligence
GB12817/52A GB744357A (en) 1951-05-23 1951-05-23 Improvements in or relating to electric register and signalling equipment
GB21248/54A GB744400A (en) 1951-05-23 1952-05-21 Improvements in or relating to electrical number-converting equipment
US289383A US2838745A (en) 1951-05-23 1952-05-22 Methods of recording and/or modifying electrical intelligence
US289385A US2868447A (en) 1951-05-23 1952-05-22 Electric register and control circuit therefor
US289386A US2865563A (en) 1951-05-23 1952-05-22 Message registers
CH320958D CH320958A (en) 1951-05-23 1952-05-23 Device for recording and / or changing information
CH329941D CH329941A (en) 1951-05-23 1952-05-23 Device for storing information
DEI5891A DE1120184B (en) 1951-05-23 1952-05-23 Memory arrangement for storing binary information in telecommunication, booking or computing systems
CH320959D CH320959A (en) 1951-05-23 1952-05-23 Device for combining various information items
CH322831D CH322831A (en) 1951-05-23 1952-05-23 Electrical information storage device
CH317179D CH317179A (en) 1951-05-23 1952-05-23 Converter for converting a number from one number system to another
FR1065479D FR1065479A (en) 1951-05-23 1952-05-23 Improvements to devices for recording and modifying electrical information
CH320960D CH320960A (en) 1951-05-23 1952-05-23 Electric control system for storage and signaling purposes
GB22653/53A GB746672A (en) 1951-05-23 1952-09-19 Improvements in or relating to timing equipment
GB7833/53A GB765666A (en) 1951-05-23 1953-03-20 Improvements in or relating to electrical intelligence storage equipment
GB7832/53A GB765665A (en) 1951-05-23 1953-03-20 Improvements in or relating to timing equipment
GB7831/53A GB765664A (en) 1951-05-23 1953-03-20 Improvements in or relating to electrical intelligence storage equipment
GB4717/54A GB786723A (en) 1951-05-23 1953-03-25 Improvements in or relating to equipment for the storage of intelligence
GB8231/53A GB786721A (en) 1951-05-23 1953-03-25 Improvements in or relating to equipment for the storage of intelligence
GB18843/53A GB786722A (en) 1951-05-23 1953-07-07 Improvements in or relating to apparatus for generating timed pulse trains
GB30095/53A GB760239A (en) 1951-05-23 1953-10-30 Improvements in or relating to computing systems
US417106A US2932009A (en) 1951-05-23 1954-03-18 Intelligence storage equipment
US417071A US3130300A (en) 1951-05-23 1954-03-18 Means for recording and modifying intelligence
US417107A US3025351A (en) 1951-05-23 1954-03-18 Equipment for performing a complex sequence of operations
US417193A US3001021A (en) 1951-05-23 1954-03-18 Electrical information storage arrangements
FR66637D FR66637E (en) 1951-05-23 1954-03-18 Improvements to devices for recording and modifying electrical information
CH337571D CH337571A (en) 1951-05-23 1954-03-19 Electrical arrangement with an information store
DEI8414A DE1016768B (en) 1951-05-23 1954-03-19 Pulse repeater for telecommunications, especially telephone systems
DEI8411A DE955429C (en) 1951-05-23 1954-03-20 Circuit arrangement for a pulse repeater in telecommunications, in particular tele-talk
DEI8412A DE973024C (en) 1951-05-23 1954-03-20 Testing device, in particular for use in switching systems
DEI8413A DE970229C (en) 1951-05-23 1954-03-20 Circuit arrangement for storage devices in telecommunication systems, in particular telephone systems
FR69051D FR69051E (en) 1951-05-23 1954-03-24 Improvements to devices for recording and modifying electrical information
DEI8445A DE1025447B (en) 1951-05-23 1954-03-24 Arrangement for the coded recording and re-stamping of messages in a memory consisting of individual elements in telecommunications or computer systems
CH332298D CH332298A (en) 1951-05-23 1954-03-25 Device for storing information
CH332299D CH332299A (en) 1951-05-23 1954-03-25 Device for storing information
GB9329/54A GB786724A (en) 1951-05-23 1954-03-30 Improvements in or relating to magnetic equipment for storing intelligence
FR69052D FR69052E (en) 1951-05-23 1954-07-06 Improvements to devices for recording and modifying electrical information
CH361829D CH361829A (en) 1951-05-23 1954-07-07 Device for generating series of electrical pulses
DEI8883A DE1088089B (en) 1951-05-23 1954-07-07 Circuit arrangement for controlling a telegraphic character scanner by means of a magnetizable drum memory
FR69054D FR69054E (en) 1951-05-23 1954-10-27 Improvements to devices for recording and modifying electrical information
FR69056D FR69056E (en) 1951-05-23 1954-11-04 Improvements to devices for recording and modifying electrical information
FR72305D FR72305E (en) 1951-05-23 1954-12-17 Improvements to devices for recording and modifying electrical information
FR72306D FR72306E (en) 1951-05-23 1955-03-29 Improvements to devices for recording and modifying electrical information
US511093A US2807004A (en) 1951-05-23 1955-05-25 Electrical intelligence storage arrangement
FR72307D FR72307E (en) 1951-05-23 1955-06-24 Improvements to devices for recording and modifying electrical information
GB18346/55A GB794126A (en) 1951-05-23 1955-06-24 Recording equipment for electrical signals
FR72309D FR72309E (en) 1951-05-23 1956-02-02 Improvements to devices for recording and modifying electrical information
GB1941057A GB845216A (en) 1957-06-20 1957-06-20 Improvements in or relating to electrical calculating circuits
US740435A US3039683A (en) 1951-05-23 1958-06-06 Electrical calculating circuits
FR768329A FR73752E (en) 1951-05-23 1958-06-19 Improvements to devices for recording and modifying electrical information
DEI15002A DE1082435B (en) 1951-05-23 1958-06-19 Adder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1941057A GB845216A (en) 1957-06-20 1957-06-20 Improvements in or relating to electrical calculating circuits

Publications (1)

Publication Number Publication Date
GB845216A true GB845216A (en) 1960-08-17

Family

ID=10128898

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1941057A Expired GB845216A (en) 1951-05-23 1957-06-20 Improvements in or relating to electrical calculating circuits

Country Status (1)

Country Link
GB (1) GB845216A (en)

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