GB1563618A - Electronic calculator - Google Patents
Electronic calculator Download PDFInfo
- Publication number
- GB1563618A GB1563618A GB3923976A GB3923976A GB1563618A GB 1563618 A GB1563618 A GB 1563618A GB 3923976 A GB3923976 A GB 3923976A GB 3923976 A GB3923976 A GB 3923976A GB 1563618 A GB1563618 A GB 1563618A
- Authority
- GB
- United Kingdom
- Prior art keywords
- terms
- memory
- calculator
- electronic calculator
- input
- 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 OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F15/00—Digital computers in general; Data processing equipment in general
- G06F15/02—Digital computers in general; Data processing equipment in general manually operated with input through keyboard and computation using a built-in program, e.g. pocket calculators
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Computing Systems (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Calculators And Similar Devices (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT6935575A IT1050604B (it) | 1975-09-23 | 1975-09-23 | Calcolatore elettronico |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1563618A true GB1563618A (en) | 1980-03-26 |
Family
ID=11311955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3923976A Expired GB1563618A (en) | 1975-09-23 | 1976-09-22 | Electronic calculator |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE2642420A1 (enrdf_load_stackoverflow) |
| FR (1) | FR2325984A1 (enrdf_load_stackoverflow) |
| GB (1) | GB1563618A (enrdf_load_stackoverflow) |
| IT (1) | IT1050604B (enrdf_load_stackoverflow) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4135662A (en) * | 1977-06-15 | 1979-01-23 | Pitney-Bowes, Inc. | Operator prompting system |
| JPS5880755A (ja) * | 1981-11-09 | 1983-05-14 | Sharp Corp | 電子式計算機 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3854124A (en) * | 1966-11-21 | 1974-12-10 | Friden Inc | Electronic calculator |
| US3818461A (en) * | 1972-04-10 | 1974-06-18 | Litton Systems Inc | Buffer memory system |
| US4099246A (en) * | 1973-12-17 | 1978-07-04 | Hewlett-Packard Company | Calculator having merged key codes |
| US3855461A (en) * | 1973-08-30 | 1974-12-17 | Hewlett Packard Co | Calculator with key code association and display features |
-
1975
- 1975-09-23 IT IT6935575A patent/IT1050604B/it active
-
1976
- 1976-09-21 FR FR7628311A patent/FR2325984A1/fr active Granted
- 1976-09-21 DE DE19762642420 patent/DE2642420A1/de active Granted
- 1976-09-22 GB GB3923976A patent/GB1563618A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2642420A1 (de) | 1977-03-31 |
| DE2642420C2 (enrdf_load_stackoverflow) | 1989-01-19 |
| FR2325984A1 (fr) | 1977-04-22 |
| IT1050604B (it) | 1981-03-20 |
| FR2325984B1 (enrdf_load_stackoverflow) | 1983-03-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| PE20 | Patent expired after termination of 20 years |
Effective date: 19960921 |