STUDY OF LOGIC GATES USING TTL ICS (6 IN 1) – GUPTA BRAND 200372 Posted on February 27, 2017May 2, 2017 by admin Objective : To verify the truth table for TTL AND, OR, NOT, NAND, NOR & EX-OR gates. Features : Instrument comprises of 5V/150mA DC Regulated Power Supply for logic ‘1’ & logic ‘0’