Accession Number:

AD0610395

Title:

ACTIVE LOGIC ELEMENTS USING NON-GALVANIC MODIFYING INPUTS.

Descriptive Note:

Final rept. for 1 Jul 62-30 Sep 64,

Corporate Author:

RCA LABS PRINCETON N J

Personal Author(s):

• HERZOG,G.
• Hu,K. C.
• Lewin,M. H.

Report Date:

1964-10-31

Pagination or Media Count:

36.0

Abstract:

Large arrays of batch-fabricated active elements present a problem of interconnections. A general interconnection scheme which can be modified at the convenience of the user is sought. An array of 128 insulated-gate fieldeffect transistors IGFET of the metal-oxide-semiconductor MOS type was assembled together with photosensitive control of signal paths. Sixty-four of the MOS transistors act as NOR logic gates with the remaining 64 MOS transistors acting as ON-OFF switches in series with the signal path. These latter MOS transistors are controlled by photosensitive elements stimulated by a light pattern. The light pattern is generated by holes in a data-processing punched card. The photosensitive elements in the present array are cadmium sulfide photoconductors fabricated on ceramic plates, but extensive work was done on cadmium telluride high-voltage photovoltaic films intended for use directly on the substrate of the active logic elements. The test array fabricated demonstrates how the signal path of a computer might be controlled by a punched card prepared either by its own output or the output of other computers. Author

Descriptors:

• *COMPUTER LOGIC
• *TRANSISTORS
• INTEGRATED CIRCUITS
• COMPUTERS
• MATERIALS
• SEMICONDUCTOR DEVICES
• PHOTOELECTRIC MATERIALS
• CADMIUM COMPOUNDS
• SULFIDES
• TELLURIDES
• SEMICONDUCTING FILMS
• VAPOR PLATING
• EVAPORATION
• AGING(MATERIALS)

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE