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Checking System

IP.com Disclosure Number: IPCOM000097000D
Original Publication Date: 1962-Mar-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 67K

Publishing Venue

IBM

Related People

Oleksiak, RE: AUTHOR

Abstract

A punched card reading system includes two reading stations connected to a magnetic core storage matrix which stores data read from the cards. Each reading station has a brush drive line, which energizes the reading brushes. Each also has a number of row drive lines which are energized successively, by means of cams, and pass through cores in the matrix. Upon coincidental energization of a row drive line and a card read line from the station, one of the cores in the matrix is set. After a card is read, data stored in the matrix is read out by energizing column and zone lines which pass through the cores. That is, when a zone line and a column line, passing through the same core, are energized simultaneously, a pulse is generated in an output line passing through the core.

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Checking System

A punched card reading system includes two reading stations connected to a magnetic core storage matrix which stores data read from the cards. Each reading station has a brush drive line, which energizes the reading brushes. Each also has a number of row drive lines which are energized successively, by means of cams, and pass through cores in the matrix. Upon coincidental energization of a row drive line and a card read line from the station, one of the cores in the matrix is set. After a card is read, data stored in the matrix is read out by energizing column and zone lines which pass through the cores. That is, when a zone line and a column line, passing through the same core, are energized simultaneously, a pulse is generated in an output line passing through the core.

Associated with the matrix is this checking system. It comprises a number of rows of cores 1...12. Each row includes forty cores, only four of which are shown. When a card passes through the first reading station, brush drive line 13 and row drive lines R(1), R(3), R(5), R(7), R(9) and R(11) are energized to set all cores in the upper two rows. When the card passes through the second reading station, all cores in the lower two rows are set by the energization of brush drive line 14 and row drive lines R(0), R(2), R(4), R(6), R(8) and R(12). At these times data from the card is being stored in the matrix.

Data is then read out from the matrix by energizing the zone and column line...