Title 3130704 - DF 2023S.pdf ✅

1 Seat No.: ________ Enrolment No.___________ GUJARAT TECHNOLOGICAL UNIVERSITY BE - SEMESTER–III(NEW) EXAMINATION – SUMMER 2023 Subject Code:3130704 Date:01-08-2023 Subject Name:Digital Fundamentals Time:02:30 PM TO 05:00 PM Total Marks:70 Instructions: 1. Attempt all questions. 2. Make suitable assumptions wherever necessary. 3. Figures to the right indicate full marks. 4. Simple and non-programmable scientific calculators are allowed. MARKS Q.1 (a) Define the logic family properties: (i) fan in (ii) propagation delay (iii) power dissipation 03 (b) Convert the following number to the given base: (i) (62)10 = (?)2 = (?)8 (ii) (AFB)16 = (?)2 = (?)8 04 (c) Why NAND and NOR gates are called universal gates? Explain with appropriate example. 07 Q.2 (a) Explain the half subtractor with logic circuit. 03 (b) Minimized the boolean expression using K-map f (A, B, C, D) = ∑m (0, 1, 5, 6, 7, 8, 9) + d(10, 11, 12, 13, 14, 15) 04 (c) Design BCD to excess-3 converter. 07 OR (c) Design a circuit which compare two binary number whether A>B, A=B or A