NL7513516A - ELECTRONIC CALCULATOR OR DIGITAL PROCESSING SYSTEM. - Google Patents
ELECTRONIC CALCULATOR OR DIGITAL PROCESSING SYSTEM.Info
- Publication number
- NL7513516A NL7513516A NL7513516A NL7513516A NL7513516A NL 7513516 A NL7513516 A NL 7513516A NL 7513516 A NL7513516 A NL 7513516A NL 7513516 A NL7513516 A NL 7513516A NL 7513516 A NL7513516 A NL 7513516A
- Authority
- NL
- Netherlands
- Prior art keywords
- processing system
- digital processing
- electronic calculator
- calculator
- electronic
- Prior art date
Links
Classifications
-
- 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
- G11C11/34—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices
- G11C11/40—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors
- G11C11/401—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors forming cells needing refreshing or charge regeneration, i.e. dynamic cells
- G11C11/402—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors forming cells needing refreshing or charge regeneration, i.e. dynamic cells with charge regeneration individual to each memory cell, i.e. internal refresh
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/04—Generating or distributing clock signals or signals derived directly therefrom
- G06F1/06—Clock generators producing several clock signals
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR 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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C17/00—Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards
- G11C17/08—Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards using semiconductor devices, e.g. bipolar elements
- G11C17/10—Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards using semiconductor devices, e.g. bipolar elements in which contents are determined during manufacturing by a predetermined arrangement of coupling elements, e.g. mask-programmable ROM
- G11C17/12—Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards using semiconductor devices, e.g. bipolar elements in which contents are determined during manufacturing by a predetermined arrangement of coupling elements, e.g. mask-programmable ROM using field-effect devices
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Computing Systems (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Calculators And Similar Devices (AREA)
- Dram (AREA)
- Tests Of Electronic Circuits (AREA)
- Input From Keyboards Or The Like (AREA)
- Digital Computer Display Output (AREA)
- Logic Circuits (AREA)
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US52524674A | 1974-11-19 | 1974-11-19 | |
| US05/525,238 US4021781A (en) | 1974-11-19 | 1974-11-19 | Virtual ground read-only-memory for electronic calculator or digital processor |
| US05/525,250 US3988604A (en) | 1974-11-19 | 1974-11-19 | Electronic calculator or digital processor chip having multiple function arithmetic unit output |
| US05/525,237 US3989939A (en) | 1974-11-19 | 1974-11-19 | Electronic calculator or digital processor chip with combined functions for constant, keyboard and control bit |
| US05/525,245 US3955181A (en) | 1974-11-19 | 1974-11-19 | Self-refreshing random access memory cell |
| US05/525,247 US4021656A (en) | 1974-11-19 | 1974-11-19 | Data input for electronic calculator or digital processor chip |
| US05/525,236 US3991305A (en) | 1974-11-19 | 1974-11-19 | Electronic calculator or digital processor chip with multiple code combinations of display and keyboard scan outputs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL7513516A true NL7513516A (en) | 1976-05-21 |
Family
ID=27569826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL7513516A NL7513516A (en) | 1974-11-19 | 1975-11-19 | ELECTRONIC CALCULATOR OR DIGITAL PROCESSING SYSTEM. |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS5173856A (en) |
| DE (1) | DE2551852A1 (en) |
| FR (1) | FR2292286A1 (en) |
| NL (1) | NL7513516A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2401459A1 (en) * | 1977-08-26 | 1979-03-23 | Cii Honeywell Bull | PORTABLE INFORMATION MEDIA EQUIPPED WITH A MICROPROCESSOR AND A PROGRAMMABLE DEAD MEMORY |
| JPS54106128A (en) * | 1978-02-08 | 1979-08-20 | Nec Corp | Time-division display unit |
| JPS58115372A (en) * | 1981-12-29 | 1983-07-09 | Fujitsu Ltd | Test circuit of semiconductor device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| UST843614I4 (en) * | 1969-07-22 | |||
| GB1401204A (en) * | 1971-07-19 | 1975-07-16 | Texas Instruments Inc | Variable function programmed calculator |
| US3781852A (en) * | 1972-11-21 | 1973-12-25 | Bowmar Instrument Corp | Calculator display circuit |
| DK664473A (en) * | 1973-09-24 | 1975-05-12 | Texas Instruments Inc |
-
1975
- 1975-11-18 JP JP50137851A patent/JPS5173856A/en active Pending
- 1975-11-19 FR FR7535355A patent/FR2292286A1/en active Granted
- 1975-11-19 DE DE19752551852 patent/DE2551852A1/en active Granted
- 1975-11-19 NL NL7513516A patent/NL7513516A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| FR2292286B1 (en) | 1983-01-21 |
| JPS5173856A (en) | 1976-06-26 |
| DE2551852A1 (en) | 1976-05-20 |
| FR2292286A1 (en) | 1976-06-18 |
| DE2551852C2 (en) | 1991-06-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| BA | A request for search or an international-type search has been filed | ||
| BB | A search report has been drawn up | ||
| BC | A request for examination has been filed | ||
| A85 | Still pending on 85-01-01 | ||
| BV | The patent application has lapsed |