CH374223A - Desktop calculator - Google Patents
Desktop calculatorInfo
- Publication number
- CH374223A CH374223A CH5025157A CH5025157A CH374223A CH 374223 A CH374223 A CH 374223A CH 5025157 A CH5025157 A CH 5025157A CH 5025157 A CH5025157 A CH 5025157A CH 374223 A CH374223 A CH 374223A
- Authority
- CH
- Switzerland
- Prior art keywords
- desktop calculator
- calculator
- desktop
- Prior art date
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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06C—DIGITAL COMPUTERS IN WHICH ALL THE COMPUTATION IS EFFECTED MECHANICALLY
- G06C7/00—Input mechanisms
- G06C7/02—Keyboards
- G06C7/06—Keyboards with one set of keys for each denomination
-
- 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
- G06F7/461—Adding; subtracting
-
- 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
- G06F7/4983—Multiplying; Dividing
- G06F7/4985—Multiplying; Dividing by successive additions or subtractions
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computing Systems (AREA)
- Computational Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Pure & Applied Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Input From Keyboards Or The Like (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2738356A GB868753A (en) | 1956-09-06 | 1956-09-06 | Improvements in or relating to calculating machines |
GB3579756 | 1956-11-22 | ||
GB2110557 | 1957-07-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH374223A true CH374223A (en) | 1963-12-31 |
Family
ID=27257978
Family Applications (5)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH5025157A CH374223A (en) | 1956-09-06 | 1957-09-06 | Desktop calculator |
CH5025257A CH374224A (en) | 1956-09-06 | 1957-09-06 | Desktop calculator |
CH5025357A CH374225A (en) | 1956-09-06 | 1957-09-06 | Adding machine |
CH5025457A CH374226A (en) | 1956-09-06 | 1957-09-06 | Key operated office calculating machine |
CH5025557A CH374227A (en) | 1956-09-06 | 1957-09-06 | Adding machine |
Family Applications After (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH5025257A CH374224A (en) | 1956-09-06 | 1957-09-06 | Desktop calculator |
CH5025357A CH374225A (en) | 1956-09-06 | 1957-09-06 | Adding machine |
CH5025457A CH374226A (en) | 1956-09-06 | 1957-09-06 | Key operated office calculating machine |
CH5025557A CH374227A (en) | 1956-09-06 | 1957-09-06 | Adding machine |
Country Status (2)
Country | Link |
---|---|
CH (5) | CH374223A (en) |
DK (1) | DK105892C (en) |
-
1957
- 1957-09-05 DK DK302757A patent/DK105892C/en active
- 1957-09-06 CH CH5025157A patent/CH374223A/en unknown
- 1957-09-06 CH CH5025257A patent/CH374224A/en unknown
- 1957-09-06 CH CH5025357A patent/CH374225A/en unknown
- 1957-09-06 CH CH5025457A patent/CH374226A/en unknown
- 1957-09-06 CH CH5025557A patent/CH374227A/en unknown
Also Published As
Publication number | Publication date |
---|---|
CH374224A (en) | 1963-12-31 |
CH374226A (en) | 1963-12-31 |
CH374225A (en) | 1963-12-31 |
DK105892C (en) | 1966-11-21 |
CH374227A (en) | 1963-12-31 |
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