上品コーデはコレで安心! 74LS138 IC: and Diagram Circuit Features, Configuration, Pin コンピュータ・IT
7400 Series Guide: 74HC138/74LS138 (3-to-8 line decoder),74138, design memory controlled by Y0 is in the 0000H to,74LS138 IC: Pin Configuration, Features, Circuit Diagram and,What 74LS138 IC is and How it works