GB981164A - Electronic memory system and switch arrangement therefor - Google Patents
Electronic memory system and switch arrangement thereforInfo
- Publication number
- GB981164A GB981164A GB18390/61A GB1839061A GB981164A GB 981164 A GB981164 A GB 981164A GB 18390/61 A GB18390/61 A GB 18390/61A GB 1839061 A GB1839061 A GB 1839061A GB 981164 A GB981164 A GB 981164A
- Authority
- GB
- United Kingdom
- Prior art keywords
- voltage
- capacitor
- staircase
- fine
- circuit
- 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
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K15/00—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
- G06K15/02—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers
- G06K15/06—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by type-wheel printers
- G06K15/07—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers by type-wheel printers by continuously-rotating-type-wheel printers, e.g. rotating-type-drum printers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/12—Analogue/digital converters
- H03M1/14—Conversion in steps with each step involving the same or a different conversion means and delivering more than one bit
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electrotherapy Devices (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Geophysics And Detection Of Objects (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
981,164. Electrostatic digital data storage apparatus. F. H. SHEPARD. May 19, 1961 [May 19, 1960], No. 18390/61. Heading G4C. [Also in Division H3] In a memory circuit, a number is remembered by charging a capacitor to a corresponding voltage level, comparing this remembered voltage with a voltage staircase, deriving a pulse at the instant when the two voltages are equal and using this pulse to actuate an electronic switch which applies to the capacitor a voltage equal to the voltage to be remembered. As described, 64 numbers are given an octal coding and the two voltages representing each number are stored in a coarse memory capacitor 122 and a fine memory capacitor 102. Considering the fine level circuit, valves 114, 116 are momentarily cut off to render valve 106 conducting, thus connecting the "fine level" input 110 to capaciter 102. The potential across capaciter 102 is then compared with the "fine staircase" voltage in circuit 140, 142 which produces an output pulse to cut off valve 154 when ever the staircase voltage exceeds that being remembered. A similar circuit cuts off valve 160 when the "coarse" staircase voltage exceeds the voltage stored in capacitor 122, and when both 154, and 160 are cut off a positive output pulse is produced on line 184. At the end of the coarse level at which 160 is cut off the "knockdown" of the "fine" staircase applies a positive potential to capacitor 168 on lead 182 and switches valve 160 on again to terminate the output pulse. The output pulse produced switches on r.f. oscillator 190 to ionize the gas in diode switches 192 (see Division H3), which connect the regenerate signal inputs 220, 222, to the capacitors 102,122 and produce also output pulses if capacitor 212 is previously charged through switch 216. Further switches may be connected to a second generator 224 to reset the circuit. Specification 825,646 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US30216A US3273013A (en) | 1960-05-19 | 1960-05-19 | Electric switch arrangement |
Publications (1)
Publication Number | Publication Date |
---|---|
GB981164A true GB981164A (en) | 1965-01-20 |
Family
ID=21853109
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB18390/61A Expired GB981164A (en) | 1960-05-19 | 1961-05-19 | Electronic memory system and switch arrangement therefor |
Country Status (2)
Country | Link |
---|---|
US (1) | US3273013A (en) |
GB (1) | GB981164A (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3375501A (en) * | 1964-03-23 | 1968-03-26 | Tektronix Inc | Peak memory circuit employing comparator for controlling voltage of storage capacitor |
US3417372A (en) * | 1965-06-07 | 1968-12-17 | Recognition Equipment Inc | Character identity decision generation |
GB1051395A (en) * | 1965-10-06 | |||
US3500165A (en) * | 1966-06-24 | 1970-03-10 | Tokyo Shibaura Electric Co | Computer control device |
US3634851A (en) * | 1970-03-04 | 1972-01-11 | George P Klein | Signal characteristic measuring system of the digital type |
US3781872A (en) * | 1972-09-11 | 1973-12-25 | Elektros Inc | Analog-to-digital conversion for processing wide-range and non-linear input signals |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2872662A (en) * | 1959-02-03 | dufour | ||
US2696566A (en) * | 1949-10-20 | 1954-12-07 | Kurt S Lion | Electric transducer system |
US2658142A (en) * | 1951-07-09 | 1953-11-03 | Northrop Aircraft Inc | High-speed commutator |
US2741756A (en) * | 1953-07-16 | 1956-04-10 | Rca Corp | Electrical data storage device |
US2771575A (en) * | 1954-01-22 | 1956-11-20 | Marchant Calculators Inc | Diode capacitor regenerator |
US2785342A (en) * | 1954-04-06 | 1957-03-12 | William S Carley | Pulse polarity reversing circuit for negative input pulses |
US2947913A (en) * | 1956-12-27 | 1960-08-02 | Gen Dynamics Corp | Gas tube switch |
US2887619A (en) * | 1957-10-04 | 1959-05-19 | Bell Telephone Labor Inc | Current limiting gating circuit |
US3071730A (en) * | 1958-12-09 | 1963-01-01 | Smith Corona Marchant Inc | Switching system for selectively ionizing gas tubes by radio frequency energy under control of moveable blocking shield |
-
1960
- 1960-05-19 US US30216A patent/US3273013A/en not_active Expired - Lifetime
-
1961
- 1961-05-19 GB GB18390/61A patent/GB981164A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3273013A (en) | 1966-09-13 |
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