GB973159A - Improvements in or relating to information storage systems - Google Patents
Improvements in or relating to information storage systemsInfo
- Publication number
- GB973159A GB973159A GB1111861A GB1111861A GB973159A GB 973159 A GB973159 A GB 973159A GB 1111861 A GB1111861 A GB 1111861A GB 1111861 A GB1111861 A GB 1111861A GB 973159 A GB973159 A GB 973159A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit
- capacitor
- information storage
- march
- resistor
- 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
- 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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C14/00—Digital stores characterised by arrangements of cells having volatile and non-volatile storage properties for back-up when the power is down
Landscapes
- Monitoring And Testing Of Exchanges (AREA)
Abstract
973,159. Error-prevention arrangements for data-storage apparatus. BRITISH TELECOMMUNICATIONS RESEARCH Ltd. March 20, 1962 [March 27, 1961], No. 11118/61. Heading G4C. [Also in Division H3] In an information storage system employing a plurality of two-state storage devices e.g. bistable toggles using valves or transistors, resetting of a device to a "normal" condition is effected by the charging current of a capacitor connected to the device. As described, Fig. 1a series circuit comprising a resistor R1 and capacitor C1 is connected across the supply to the circuit and the junction of the two elements is connected via a buffer diode D 1 to one of the outputs of one or more toggle circuits. On switching on the circuit after a supply interruption the potential across C1 is zero, earthing the output connected to it, thus establishing the state of the circuit. In a modification, Fig. 3 the capacitor C2 is shunted by a resistor R2 and included between earth and capacitor C2, is a switch X which is operated to reset the circuit after some irregularity of operation. The circuits of Figs. 1 and 3 may be connected to the same toggle Fig. 3 (not shown). Specification 826,604 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1111861A GB973159A (en) | 1961-03-27 | 1961-03-27 | Improvements in or relating to information storage systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1111861A GB973159A (en) | 1961-03-27 | 1961-03-27 | Improvements in or relating to information storage systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB973159A true GB973159A (en) | 1964-10-21 |
Family
ID=9980369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1111861A Expired GB973159A (en) | 1961-03-27 | 1961-03-27 | Improvements in or relating to information storage systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB973159A (en) |
-
1961
- 1961-03-27 GB GB1111861A patent/GB973159A/en not_active Expired
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