Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1989-09-29
1991-09-03
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
377102, H01J 3150
Patent
active
050456814
ABSTRACT:
The invention comprises a semiconductor substrate with a plurality of photoconductive elements. The photoconductive elements are connected to form a combinational logic ripple carry adder having only AND and OR logic gates. An optic substrate overlies the semiconductor substrate and directs light representing logic parameters onto the logic gates. The ripple carry adder has complementary inputs and complementary outputs to enable the use of only AND and OR gates.
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Elrod Steven E.
Falk R. Aaron
Hill Keith H.
Nelms David C.
The Boeing Company
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