punched card - a card on which data can be recorded in the form of punched holes Hollerith card, punch card card - one of a set of small pieces of stiff paper marked in various ways and used for playing games or for telling fortunes; "he collected cards and traded them with the oth...
Punch cards were once a popular method of inputting data into computers. However, they are no longer used in modern computer technology due to their limitations and inefficiencies. Punch cards could only store a small amount of information, and any errors in the card would require it to be ...
A system of punched card programming and recording of primate discrimination learning experiments is described to illustrate the application of these techniques to the automation of the discrete trial learning situation, allowing for punched card recording and subsequent digital computer data analyses ...
“Murder, huh? I'm in for bending, folding and mutilating computer cards.” Card Verification To ensure that the keypunched data is correct before it enters the computer, a card verifier may be used. A verifying operator feeds in the cards punched by the keypunch operator and retypes all...
When IBM entered and began to dominate the computer industry starting in the early 1950s, it used the punched card for programming, data input and often for data output. IBM had been leasing punched card based unit record equipment for over half a century by then and its technology was ...
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The card reader that [Ken] examines in detail uses vacuum tubes and relays to handle the logical operation to handle memory and logic operations. This particular specimen is more than half a century old, rather robust, and a perfect piece for theComputer History Museum in Mountain View. ...
A punch card is a simple piece of paper stock that can hold data in the form of small punched holes, which are strategically positioned to be read by computers or machines. It is an early computer programming relic that was used before the many data storage advances relied upon today. ...
Our DNA punch card storage system design also enables enzyme driven toehold creation for bitwise random access, a unique feature not paralleled by any other implementation. Furthermore, nick-based storage allows for in-memory computing on the data stored on molecular media (Table1). As reported ...
Punched card sorters were a key part of data processing from 1890 until the 1970s, used for accounting, inventory, payroll and many other tasks. This article looks inside sorters, showing the fascinating electromechanical and vacuum tube circuits used for data processing in the pre-computer era...