Design Of Digital Circuits - Dharmsinh Desai University

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Design Of Digital Circuits Lab Manual 3.4 Testing the Solution: Observation Table for 4 bit Comparator: Observation Table for 8 bit Comparator: A B A>B A=B A
Design Of Digital Circuits Lab Manual EXPERIMENT - 9 1 AIM: To verify various flip-flops like D, T, and JK. 2 TOOLS/APPARATUS: Power supply, Digital Trainer kit, ICs – 7474, Connecting wires, Multimeter, CRO, Clock Pulse Generator, Patch Chords, IC 7400 NAND gate IC, IC 7402 NOR gate IC, IC 7404 NOT gate IC, LED. 3 STANDARD PROCEDURES: 3.1 Analyzing the Problem: FLIP-FLOP: "Flip-flop" is the common name given to two-state devices which offer basic memory for sequential logic operations. Flip-flops are heavily used for digital data storage and transfer and are commonly used in banks called "register" for the storage of binary numerical data. D-Type flip-flop (Toggle switch) : The operations of a D flip-flop are much more simpler. It has only one input addition to the clock. It is very useful when a single data bit (0 or 1) is to be stored. If there is a HIGH on the D input when a clock pulse is applied, the flip-flop SETs and stores a 1. If there is a LOW on the D input when a clock pulse is applied, the flip-flop RESETs and stores a 0. To implement D flip-flop we require NAND gates and NOR gates. The truth table for D flip flop is shown below: J-K flip-flop: The J-K flip-flop works very similar to S-R flip-flop. The only difference is that this flip-flop has NO invalid state. The truth table is shown below. Department of Information Technology, Faculty of Technology, D. D. University, Nadiad. 40
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Design Of Digital Circuits - Dharmsinh Desai University

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