Sun Electric Corporation

Karl R Bahnick

James Johnson

David E Groe

An engine analyzer includes an A/D converter for sampling analog data from an engine under test and developing digital data consisting of 11 magnitude bits and a sign bit. Four flag bits are added to make a digital word of sixteen bits with the four added bits being equal to the sign bit. Flags are set by making their bit value opposite to that of the sign bit. The sixteen bit words are stored in a RAM memory and the presence of the flags enables ready identification and retrieval of the data.

Flag generation system

The plural source arbitration system relates generally to communications systems for linking peripheral devices to a computer. Specifically, the arbitration system allows an external keyboard and a remote control device to be intercoupled to the keyboard slot of a computer and carry out communications without confusion.

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Vernon Hills, IL, United States of America

Karl R Bahnick