boundary-scan testing A technique used to facilitate effective testing of the digital ICs, and their interconnections, on high-density printed circuit boards in the factory and in the field. Extra logic is included and this intercepts the logic signals at each functional pin of the logic components. The extra logic is transparent in normal operation but can be configured as a long shift register in a special test mode. The shift registers on each component are connected into a daisychain so that all the logic circuits can be accessed through a special group of test connections brought out to the edge connector. This structure is used to feed predefined information to the input pins and collect the results from the output pins, thus enabling several types of test to be performed (function and interconnect). See also back driving.
More From encyclopedia.com
Logic Circuit , logic circuit An electric circuit concerned with logic systems. The term logic device is often used synonymously. A logic circuit is required to prod… Acceptance testing , acceptance testing See testing. See also review. system testing See testing. Fuzzy Logic , "Fuzzy logics" are multivalued logics intended to model human reasoning with certain types of imprecision. The field of fuzzy logic originated with a… Logical , logical •cackle, crackle, grackle, hackle, jackal, mackle, shackle, tackle •ankle, rankle •Gaskell, mascle, paschal •tabernacle • ramshackle •débâcle… Flip-flop , flip-flop (bistable) An electronic circuit element that is capable of exhibiting either of two stable states and of switching between these states in… Psychological Tests , Definition Psychological tests are written, visual, or verbal evaluations administered to assess the cognitive and emotional functioning of children…
About this article
Updated About encyclopedia.com content Print Article
You Might Also Like
Bountrogianni, Hon. Dr. Marie, B.A.(Hons.), M.Ed., D.Ed. (Hamilton Mountain) Minister of Children and Youth Services and Minister of Citizenship and Immigration