US3751637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital computer and form reader for inventory control and recording cash transactions
Assignee: TRW Data Systems Inc
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Filing: 1972-05-25
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Granted: 1973-08-07
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Expires: 1992-05-25
Abstract
Abstract A digital computer employing hard wired control logic and a rotating memory drum system for inventory control, price changes and cash transactions. If desired, a novel form reader may be employed in conjunction with the computer to sense transactions and, in conjunction with the form itself, to actuate the computer at appropriate times. The computer and form reader are particularly suited for use in eating establishments where transaction speed is required.
Inventors
- 👤 N Dillon
- 👤 B Sincich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:48
CPC Classifications
G; G06; G06Q; G06Q10/00; G06Q10/08; G06Q10/087; G06K; G06K7/00; G06K7/10; G06Q10/0877; G06Q10/08772; G06Q20/00; G06Q20/08; G06Q20/20; G06Q20/203; G07; G07G; G07G1/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
153 words
A digital computer for recording and calculating transaction data on an input-output form bearing clock lines and corresponding rows of data blocks containing data marks comprising: means to feed the form containing the data into a form reader; means to scan a row of blocks adjacent clock lines on the form for quantity of an item and price data until a data mark in a row of blocks corresponding to a clock line is sensed; means to stop the form for a time interval; memory means for storing sensed data; means to continue the form feeding and the scan, stop data storage for each succeeding row of blocks corresponding to a clock line until all the data have been sensed; means to calculate quantity and price transactions and for storing the results of the transaction in the memory; and means to print the data printout and the total transaction calculation on the form.
Claim 2
Dependent Claim
153 words
A digital computer for recording and calculating transaction data on an input-output form bearing clock lines and corresponding rows of data blocks containing data marks comprising: means to feed the form containing the data into a form reader; means to scan a row of blocks adjacent clock lines on the form for quantity of an item and price data until a data mark in a row of blocks corresponding to a clock line is sensed; means to stop the form for a time interval; memory means for storing sensed data; means to continue the form feeding and the scan, stop data storage for each succeeding row of blocks corresponding to a clock line until all the data have been sensed; means to calculate quantity and price transactions and for storing the results of the transaction in the memory; and means to print the data printout and the total transaction calculation on the form.
Claim 3
Dependent Claim
19 words
The apparatus of claim 1, including means for printing quantity, price and quantity x price data onto the form.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |