GB783102A - Improvements relating to digital computing apparatus - Google Patents
Improvements relating to digital computing apparatusInfo
- Publication number
- GB783102A GB783102A GB3497054A GB3497054A GB783102A GB 783102 A GB783102 A GB 783102A GB 3497054 A GB3497054 A GB 3497054A GB 3497054 A GB3497054 A GB 3497054A GB 783102 A GB783102 A GB 783102A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- zero
- carry
- tube
- arrangements
- 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
- G06F7/48—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.
- G06F7/498—Computations with decimal numbers radix 12 or 20. using counter-type accumulators
- G06F7/4981—Adding; Subtracting
Landscapes
- Engineering & Computer Science (AREA)
- Computing Systems (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computational Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Pure & Applied Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Electrotherapy Devices (AREA)
Abstract
783,102. Digital electric calculating apparatus. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 30, 1955 [Dec. 2, 1954], No. 34970/54. Class 106 (1). Zero resetting arrangements for electronic multi-cathode tube type of counter include means for applying a reset pulse to each stage and simultaneously applying a pulse to the carry-over apparatus to render it inoperative during the resetting operation. The zero cathode Ko of each counter tube is connected through a resistor Ro to a bus-bar RBB which delivers a negative reset pulse to each zero cathode and also, via a condenser C4, to the trigger electrode of each transfer tube T, thus rendering ineffective the carry-over arrangements. Rectifier W1 prevents overswing from affecting the tube T, and rectifier W2 allows ordinary cathode current to pass from the zero cathode Ko while presenting a high impedance to the reset pulses applied at terminal A. The carry-over arrangements are described in Specification 782,433.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3497054A GB783102A (en) | 1954-12-02 | 1954-12-02 | Improvements relating to digital computing apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3497054A GB783102A (en) | 1954-12-02 | 1954-12-02 | Improvements relating to digital computing apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB783102A true GB783102A (en) | 1957-09-18 |
Family
ID=10372258
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3497054A Expired GB783102A (en) | 1954-12-02 | 1954-12-02 | Improvements relating to digital computing apparatus |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB783102A (en) |
-
1954
- 1954-12-02 GB GB3497054A patent/GB783102A/en not_active Expired
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