GB525330A - Improvements in or relating to electrically operated calculating apparatus - Google Patents
Improvements in or relating to electrically operated calculating apparatusInfo
- Publication number
- GB525330A GB525330A GB30530/38A GB3053038A GB525330A GB 525330 A GB525330 A GB 525330A GB 30530/38 A GB30530/38 A GB 30530/38A GB 3053038 A GB3053038 A GB 3053038A GB 525330 A GB525330 A GB 525330A
- Authority
- GB
- United Kingdom
- Prior art keywords
- calculating
- operator
- relays
- switches
- circuits
- 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
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
- G06F7/46—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using electromechanical counter-type accumulators
-
- 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
- G06F7/46—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using electromechanical counter-type accumulators
- G06F7/462—Multiplying; dividing
- G06F7/465—Multiplying; dividing by partial product forming (with electric multiplication table)
Landscapes
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Pure & Applied Mathematics (AREA)
- Computing Systems (AREA)
- Computational Mathematics (AREA)
- Paper (AREA)
- Devices For Checking Fares Or Tickets At Control Points (AREA)
- Electric Cable Installation (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
- Calculators And Similar Devices (AREA)
Abstract
525,330. Calculating-apparatus. STANDARD TELEPHONES & CABLES, Ltd. (Kozma, L., and Kruithof, J.). Nov. 21, 1938, No. 30530. [Class 106 (i)] . An electrical calculating apparatus formed as a unit or adapted for control by a number of operators, comprises a control unit including a printer, means in said control unit for submitting a problem to the calculating unit, means for causing the printer to print said problem concurrently with its submission, means in said calculator for ascertaining the solution to said problem and means for causing said printer to print the result. Each control unit or operator's equipment comprises a single bank of numeral keys and control keys for signalling the kind of calculation and the decimal point. A key marked "equals" is provided for signalling the termination of the transmission of a problem and a key marked "cancel" is provided for use in the correction of errors. A printing device for recording the data, the characteristic signs and the result is also provided. The 'operator's equipment is connected to the calculating equipment by a line and access circuit arrangement with a sequence switch as described in Specification 525,329. The calculating equipment is constituted by sets of telephone-type contact making relays, eleven point step-by-step switches. power driven impulse sequence switches and impulse distributers. A complete calculating unit is shown in Fig. 1 diagrammatically. The operator's set, Fig. 2, is connected to a line and access circuit, Fig. 3, and thence through a code receiving set, Fig. 4, with transferring and storage relays to one of a number of calculating circuits, Fig. 5, with sequence switches for carrying out the different calculations. The calculating sets are connected by distributer circuits, Fig. 6, to route impulses created by the calculating circuits to the solution circuits, Fig. 7. The solution circuits are connected to a circuit, Fig. 8, which sends out the result of the calculation to the operator's printing device. Operation. The operator depresses the start, key and if a calculating set is idle he receives a send signal and then depresses the digit keys for the first number. The first or highest digit is sent to a set of receiving relays and is then transmitted to the first set of denominational groups of storage relays whereupon the receiving relays are returned to normal ready to receive the next digit. After the units digit is sent the operator sends the decimal signal. The operation of the storage relays connects up code sending relays to transmit a code signal to the operator which is signalled back to the calculating equipment and initiates the printing of the digits of the number at the operator's station. If the number is not correctly transmitted the ''cancel" key is depressed to restore the calculating equipment to normal. If the number is correct the sign for the kind of calculation is then transmitted whereupon the distributer and sequence switches are operated to effect the transmission of the digits from the storage relays to the calculating equipment. The second number has, in the meantime, been received, checked and printed and is then transmitted to the calculating equipment. When the final number has been sent the operator depresses the "equals" key and the result is then computed the digits being signalled to the operator and back to the calculating equipment which thereupon sends a printing signal and the result is recorded. The apparatus is restored to normal and a new availability sign is sent to the operator. Subtraction is effected by adding the complement, with respect to 9, of the number to be subtracted and by adding unity to the last digit in the result. Relays co-operating with the eleven point switches enable the transfer operations to be effected. Multiplication is performed by setting the two factors on the storage relays, the multiplication sign being sent before the second factor. The distributer circuits are modified by operation of the sign key and four sequence switches are provided for the code numbers 1, 2, 4 and 5 to effect transmission of the corresponding multiples under control of the multiplier storage relays. Division is effected in the usual manner by repeated subtraction and correction. Comparison of the divisor with the part of the dividend under consideration is effected by use of potentiometric apparatus and relays. The electrical circuit arrangements and apparatus for multiplication and division are the same as those described in Specification 525,398. Digit counting switches are employed to count the digits for the purpose of determining the position of the decimal point in the case of multiplication and division: this mechanism forms the subject-matter of Specification 525,396. In the apparatus described the impulse sender sequence switches, distributer circuit and calculating equipment are duplicated and identical to those set forth in Specification 525,397. The calculation is performed simultaneously by both sets and compared by a test relay, an alarm or signal being given if the results do not agree. In a modification step by step switches are employed instead of the power driven sequence switches. In this form for multiplication the impulses sent to the solution storage switches represent the units and tens of the partial products.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB248857X | 1938-10-21 | ||
GB91039X | 1939-10-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB525330A true GB525330A (en) | 1940-08-27 |
Family
ID=26242694
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB27538/39A Expired GB525396A (en) | 1938-10-21 | 1938-11-21 | Improvements in or relating to electrically-operated calculator equipment |
GB27540/39A Expired GB525397A (en) | 1938-10-21 | 1938-11-21 | Improvements in or relating to electrically-operated calculating equipment |
GB30530/38A Expired GB525330A (en) | 1938-10-21 | 1938-11-21 | Improvements in or relating to electrically operated calculating apparatus |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB27538/39A Expired GB525396A (en) | 1938-10-21 | 1938-11-21 | Improvements in or relating to electrically-operated calculator equipment |
GB27540/39A Expired GB525397A (en) | 1938-10-21 | 1938-11-21 | Improvements in or relating to electrically-operated calculating equipment |
Country Status (5)
Country | Link |
---|---|
US (1) | US2344885A (en) |
BE (1) | BE437366A (en) |
CH (1) | CH248857A (en) |
FR (1) | FR861845A (en) |
GB (3) | GB525396A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2434681A (en) * | 1943-02-13 | 1948-01-20 | Bell Telephone Labor Inc | Remotely controlled electrical calculator |
DE1549383B1 (en) * | 1966-04-22 | 1970-09-24 | Bell Punch Co Ltd | Electric adding machine |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2702668A (en) * | 1955-02-22 | dustin | ||
US2935250A (en) * | 1960-05-03 | reppert | ||
US2432324A (en) * | 1940-08-09 | 1947-12-09 | Teleregister Corp | Registering system |
BE481773A (en) * | 1942-07-27 | |||
US2467419A (en) * | 1943-10-16 | 1949-04-19 | Marchant Calculating Machine | Automatic decimal and shift control mechanism |
US2484462A (en) * | 1944-05-25 | 1949-10-11 | Gen Railway Signal Co | Airway traffic control system |
US2484463A (en) * | 1944-06-22 | 1949-10-11 | Gen Railway Signal Co | Airway traffic control system |
US2424100A (en) * | 1944-11-10 | 1947-07-15 | Ibm | Relay type adding and result checking machine |
US2668661A (en) * | 1944-11-23 | 1954-02-09 | Bell Telephone Labor Inc | Complex computer |
US2588923A (en) * | 1946-01-16 | 1952-03-11 | Int Standard Electric Corp | Calculator |
US2502917A (en) * | 1946-10-16 | 1950-04-04 | Ibm | Record controlled accumulating mechanism |
US2679977A (en) * | 1946-12-17 | 1954-06-01 | Bell Telephone Labor Inc | Calculator sign control circuit |
US2977048A (en) * | 1946-12-17 | 1961-03-28 | Bell Telephone Labor Inc | Automatic calculator |
US2668009A (en) * | 1947-12-09 | 1954-02-02 | Teleregister Corp | Ticket printing and accounting system |
US2538636A (en) * | 1947-12-31 | 1951-01-16 | Bell Telephone Labor Inc | Digital computer |
US2528394A (en) * | 1948-09-15 | 1950-10-31 | Bernard Z Rose | Electronic remote-controlled registering system |
NL74434C (en) * | 1948-09-22 | |||
NO84202A (en) * | 1948-10-08 | |||
US2636672A (en) * | 1949-01-19 | 1953-04-28 | Ibm | Selective sequence electronic calculator |
US2717733A (en) * | 1949-05-13 | 1955-09-13 | Ibm | Typewriter controlled calculator |
US2580870A (en) * | 1949-11-25 | 1952-01-01 | Ibm | Accumulator |
NL83444C (en) * | 1950-12-29 | |||
US2750111A (en) * | 1952-03-04 | 1956-06-12 | Maul Michael | Multiplying machines |
DE969627C (en) * | 1952-03-05 | 1958-06-26 | Michael Maul | Multiplication machine |
FR1084147A (en) * | 1952-03-31 | 1955-01-17 | ||
US2834543A (en) * | 1952-07-12 | 1958-05-13 | Monroe Calculating Machine | Multiplying and dividing means for electronic calculators |
BE528222A (en) * | 1953-04-20 | |||
DE1051030B (en) * | 1954-01-15 | 1959-02-19 | IBM Deutschland Internationale Büro-Maschinen Gesellschaft m.b.H., Sindelfingen (Württ.) | Electronic multiplication machine |
US2829827A (en) * | 1954-03-01 | 1958-04-08 | Ibm | Electronic multiplying machine |
US3047228A (en) * | 1957-03-30 | 1962-07-31 | Bauer Friedrich Ludwig | Automatic computing machines and method of operation |
-
0
- BE BE437366D patent/BE437366A/xx unknown
-
1938
- 1938-11-21 GB GB27538/39A patent/GB525396A/en not_active Expired
- 1938-11-21 GB GB27540/39A patent/GB525397A/en not_active Expired
- 1938-11-21 GB GB30530/38A patent/GB525330A/en not_active Expired
-
1939
- 1939-11-09 US US303504A patent/US2344885A/en not_active Expired - Lifetime
- 1939-11-23 FR FR861845D patent/FR861845A/en not_active Expired
-
1940
- 1940-03-01 CH CH248857D patent/CH248857A/en unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2434681A (en) * | 1943-02-13 | 1948-01-20 | Bell Telephone Labor Inc | Remotely controlled electrical calculator |
DE1549383B1 (en) * | 1966-04-22 | 1970-09-24 | Bell Punch Co Ltd | Electric adding machine |
Also Published As
Publication number | Publication date |
---|---|
GB525396A (en) | 1940-08-27 |
CH248857A (en) | 1947-05-31 |
FR861845A (en) | 1941-02-18 |
GB525397A (en) | 1940-08-27 |
BE437366A (en) | |
US2344885A (en) | 1944-03-21 |
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