Abstract:
A substrate supporting an operational integrated circuit and further supporting a fault-detecting monitor integrated circuit, wherein the monitor circuit samples a plurality of check points in the operational circuit to sense faulty functioning of the operational circuit, enters into a storage member an indicium of the fault status of the operational circuit, and delivers at output terminals of the substrate signals representing the indicium stored in the storage member.
Abstract:
THIS INVENTION RELATES TO A METHOD FOR PREPARING ARTWORK TO BE USED IN MANUFACTURING OF PRINTED CIRCUITS. THE NOVELTY RESIDES IN THE PROVISION OF OPTICAL A REFERENCE MEANS ON A PLURALITY OF MASKS AND A PHOTOSENSITIVE MEMBER WHICH PERMITS PRECISION ALIGNMENT OF THE MASKS RELATIVE TO A PHOTOSENSITIVE MEMBER.
Abstract:
A high speed printer wherein print characters are disposed in rows about the periphery of a rotating drum, wherein the particular character opposite a print line along the direction of rotation of the drum is denoted by the state of a counter which is advanced as each character row passes the print line, and wherein the counter is reset when a predetermined point on the drum passes said print line.
Abstract:
This invention relates to the interconnection of data-handling systems, which are remote from one another, by means of a modem simulator, the modem simulator including a synchronizing signal generator having means for adjusting the time ratio for the directional transmission of information signals between said data-handling systems.
Abstract:
An electromagnetic structure including a movable armature and having additional airgaps provided in the magnetic loop so that the transit time from rest position to energized position is decreased.
Abstract:
A distributed parameter electromagnetic delay line is obtained by superimposing insulating thin foldable substrates carrying conductive patterns, which form, when folded in accordionlike fashion, a helicoidal winding composed of a plurality of turns interleaved with grounded conducting areas. As an alternate construction, a single insulating substrate carrying conductive patterns on both sides may be used.
Abstract:
THIS INVENTION RELATES TO A METHOD FOR FABRICATING PHOTOGRAPHIC ARTWORK FOR USE IN THE MANUFACTURE OF PRINTED CIRUCITS, THE ARTWORK BEING OBTAINED THROUGH THE USE OF A FIRST MASK OF HIGH PRECISION PATTERN CLOSE TO A PHOTOSENSITIVE PLATE AND A SECOND MASK FOR OPAQUING SELECTED PORTIONS OF THE PATTERN OF SAID FIRST MASK AND EXPOSING THE SAME TO APPROPRIATE RADIATION. THIS PROCESS IS REPEATED UNTIL THE DESIRED ARTWORK IS OBTAINED.
Abstract:
THE INVENTION RELATES TO MEMORIES WHICH MAY BE MASS FORMED AS INTEGRATED CIRCUITS BY SUITABLE DEPOSITION OF PREDETERMINED MATERIALS ON A SUBSTRATE AND WHEREIN MEMORIES HAVING DETERMINED CHARACTERISTICS MAY BE FORMED BY SELECTIVELY ELECTRICALLY DESTROYING PREDETERMINED ELECTRICAL LINKS.