2023.Spring.PreLab4 (1)CS 4141: Digital Systems Lab Experiment #4 – Familiarization with Sequential Logic Circuits (Flip-Flops) CS 4141 Laboratory 4, PRE-LAB 1 Objective: The purpose of...

This is an Undergraduate DIGITAL LOGIC CLASS. Please use appropriate topics listed in the problems. Do all the highlighted problems.


2023.Spring.PreLab4 (1) CS 4141: Digital Systems Lab Experiment #4 – Familiarization with Sequential Logic Circuits (Flip-Flops) CS 4141 Laboratory 4, PRE-LAB 1 Objective: The purpose of Experiment #4 is to familiarize students with the functionality of the D and J-K flip-flops, and with the construction of a clocked flip-flop (essentially a clocked D-type FF). We will build the RS and clocked D flip-flop circuits in the lab. . Turn-In Checklist Make certain that your name, your lab section, the date, and “Pre-Lab 1” is at the top of your paper. • Problem 1. DFF Flip Flop Truth Table (5 points) • Problem 2. JK Flip Flop Truth Table (5 points) • Problem 3. Logic Diagram of a tiny ALU with DFF Accumulator (10 points) Problem 1. DFF Flip-Flop Truth Table (5 points) Below are the DFF logic symbol and circuit diagram (from ic_diagrams.pdf). Learn about D Flip-Flop IC 7474. Draw truth table for the output Q and Q’. Consider all inputs including Clock, CLEAR (Reset), PRESET and data pin D. 1 Chandrahas Nanduri CS 4141: Digital Systems Lab Problem 2. JK Flip-Flop Truth Table (5 points) Below are the logic symbol and IC diagram of the JK-FF. Learn about JK Flip-Flop IC 74107. Draw truth table for the output Q and Q’. Consider all inputs including Clock, Clear, data pin J, and data pin K Problem 3. Logic Diagram of a tiny ALU with DFF Accumulator (10 points) This problem involves building a tiny ALU performing 4-bit addition and using two 74SL74 (4 DFF’s) and a 4-bit adder. Provide an implementation to perform the following ALU addition operation. Add A,B – This operation adds register A and input B and stores the result in register A. Create a 4-bit register using 4 D FFs which acts as an accumulator. This accumulator is connected with an adder and is performing the following task. The initial value of the accumulator is 0 and every time a clock pulse is given, it adds the current value of the accumulator (let’s call it A) and a given 4-bit input B. The B input is provided using 4 input switches. Thus, the accumulator stores the addition of multiple 4-bit values provided to the ALU. Draw the Logic Diagram of a tiny ALU with DFF Accumulator. Use logical symbols, not IC chips. CD stands for Clear, CP stands for Clock. Pin 2 is Q1’ Pin 3 is Q1. 2 Experiment #4 – Familiarization with Sequential Logic Circuits (Flip-Flops) CS 4141 Laboratory 4, PRE-LAB 1 Turn-In Checklist Problem 1. DFF Flip-Flop Truth Table (5 points) Problem 2. JK Flip-Flop Truth Table (5 points) Problem 3. Logic Diagram of a tiny ALU with DFF Accumulator (10 points)