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LOGIC GATES (PRACTICE PROBLEMS) - Free GATE ECE 2017 ...

LOGIC GATES ( practice problems ) Key points and summary First set of problems from Q. Nos. 1 to 9 are based on the LOGIC GATES like AND, OR, NOT, nand & NOR etc. First four problems are basic in nature. Problems 3 & 4 are based on word statement. Problems 5 to 9 are on Universal GATES . How the LOGIC circuits can be designed using these GATES ? nand gate implementation has been very common. The procedure is Write the Boolean expression in SOP form. Simplify the expression Double invert it If Boolean function has only one term then implement by observation. Problems 10 to 17 are on EX-OR, EX-NOR and other GATES . Good number of problems are asked on EX-OR and EX-NOR GATES . You have to be thorough with the SOP & POS expressions for these GATES and how they have to be used in the problems. Practice these problems to get confidence.

NAND gate satisfies the condition but EX-OR gates does not as it gives 0 output for the same inputs. Option (b) is the correct choice where both gates satisfy the given condition. 3. A locker has been rented in the bank. Express the process of opening the locker in

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