{"id":"S85136934","label":"Transistor-transistor logic circuits","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85136934","normalized_label":"transistor-transistor logic circuits","broader":["http://id.loc.gov/authorities/subjects/sh85078116","http://id.loc.gov/authorities/subjects/sh85136930"],"aliases":["TTL (Electronic circuits)"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85136934","provider":"lcsh","revision":"19e608e97606b473","taxonomy_revision":"f050b5d4780b1289","title":"Transistor-transistor logic circuits","url":"/topics/S85136934","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"9514069717166735872","address_version":"morton4x16-v1","coordinates":[0,20,19544,38912],"answer_status":"Directory metadata; local answer requires separate source review","truth_status":"Subject descriptor, not a factual answer or a demonstrated knowledge gap","reviewed_answer":null}