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Dual Diagnostic Test Block BCD Plus Parity

IP.com Disclosure Number: IPCOM000079244D
Original Publication Date: 1973-Jun-01
Included in the Prior Art Database: 2005-Feb-26
Document File: 2 page(s) / 40K

Publishing Venue

IBM

Related People

Chatlos, RA: AUTHOR

Abstract

This is a solid-state indicator of 10 (ten) channels of displayed information. Two separate channels of binary-coded decimal (BCD) plus a parity check for each channel.

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Dual Diagnostic Test Block BCD Plus Parity

This is a solid-state indicator of 10 (ten) channels of displayed information. Two separate channels of binary-coded decimal (BCD) plus a parity check for each channel.

The product has a two-dimensional viewing surface 1 against a contrasting black background 2, the windows for 1 for light emission are labelled 3 for their indicated function. This design permits either horizontal or vertical mounting. By bending pins 4 (A through K) 90 degrees as indicated at 5, horizontal viewing is achieved. Pins 6 (A, K, M) are common. Pins K and M 6 may be cut for this mounting orientation. Design centers for pins 4, 5, 6 are such that socket or card mounting is permitted.

The original design is for two channels plus parity indications, but each block may be used to accommodate other applications such as a linear array of 10 (ten). New legends 3 may be affixed to the block to reidentify the indications by separately supplied adhesive tapes.

The design of the two-dimensional indicators 1 are esthetically superior to current point source indicators.

The product construction design is: pins 4, 5 and 6 are attached to ceramic substrate 7. The substrate may have the conductors 8 silk screen deposited. The pattern is arranged to accommodate the light-emitting diode chip 9, and either a resistor chip 10, or a thick film paste deposited resistor, not shown, as an alternate series voltage dropping device. The energy emitted by the chip 9 is c...