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Capacitor Read Only Memory

IP.com Disclosure Number: IPCOM000096301D
Original Publication Date: 1963-Mar-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 82K

Publishing Venue

IBM

Related People

Haskell, JW: AUTHOR

Abstract

The read-only memory has base plate 11 onto which is formed etched circuit 13 in a pattern of rows 15 and columns 21 of conductive material. Insulating material 35 is placed over etched circuit 13. Record card 29 having a conductive circuit pattern 32 is positioned over insulating material 35. Card 29 is shown rotated through 90 Degrees in the drawing for sake of clarity. Pattern 32 includes a group of conductive strips 31 each of which is connected to conductive row line 34. Pattern 32 also includes a group of conductive pads 33. These extend from line 34 and form a horizontal comb-like pattern at one end of it. Strips 31 and pads 33 on card 29 are arranged to mate with rows 15 and columns 21, respectively, of etched circuit 13.

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Capacitor Read Only Memory

The read-only memory has base plate 11 onto which is formed etched circuit 13 in a pattern of rows 15 and columns 21 of conductive material. Insulating material 35 is placed over etched circuit 13. Record card 29 having a conductive circuit pattern 32 is positioned over insulating material 35. Card 29 is shown rotated through 90 Degrees in the drawing for sake of clarity. Pattern 32 includes a group of conductive strips 31 each of which is connected to conductive row line
34. Pattern 32 also includes a group of conductive pads 33. These extend from line 34 and form a horizontal comb-like pattern at one end of it. Strips 31 and pads 33 on card 29 are arranged to mate with rows 15 and columns 21, respectively, of etched circuit 13. Holes 30 are punched in card 29 to represent information, each hole that is punched removing one of conductive pads 33.

A signal, applied to selected ones of conductive rows 15 via input tags 19 and conductors 17 on base 11, is capacitively coupled to conductive strips 31 formed on card 29. The signal which is connected electrically to conductive pads 33 of card 29 is further capacitively coupled to columns 21 on base 1 1. There is no capacitive coupling, however, where one of the electrodes in the form of conductive pad 33 is removed by a punched hole 30. Thus, no output is obtained from this juncture. By selectively coding holes 30 in card 29, data output is obtained from columns 21 via conductors 23 and outp...