Two J-K flip-flops with their.J-K inputs tied HIGH are cascaded to be used as counters. After four input clockpulses, the binary count is: a. 00 h. 11 c. 01 d. 10 اختیار Which of the following is correct for a gated D Latch? a. The output toggles if one of the inputs is held HIGH. b. Only one of the inputs can be HIGH at a time. c. The output complement follows the input when enabled. d. Q output follows the inpua Dwhen the enable is HIGH

Two J-K flip-flops with their.J-K inputs tied HIGH are cascaded to be used as counters. After four input clockpulses, the binary count is: a. 00 h. 11 c. 01 d. 10 اختیار Which of the following is correct for a gated D Latch? a. The output toggles if one of the inputs is held HIGH. b. Only one of the inputs can be HIGH at a time. c. The output complement follows the input when enabled. d. Q output follows the inpua Dwhen the enable is HIGH

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

See similar textbooks

Similar questions

MSB OUTPUT LSB J2 Qs J. K R K R2 K RA R CLOCK The logic circuit has the following number of possible states, if two of the flip flops are in the set state? Select one: О а.6 O b. 5 O c.7 O d. 8 O e. 4 O f. 3 O g. 2 O h. 16 O i. 10 Oj. 12
Two input NAND Gate can be constructed using a. None of the choices are correct O b. DRL Logic Oc. TTL Logic Od. RTL logic Clear my choice In a two input Ex-NOR Gate, output is high when a. both inputs are same O b. both inputs are different Clear my choice A two input AND Gate produces a high output when O a. all inputs are low O b. one of the input is high O c. one of the input is low O d. all inputs are high
1. Given the following circuit: 5 ns D. 1ons The gate delays are as shown above the gates. A, B, C are three input, and all of them are varying, as given below: A = 0 at time 0, and stays constant until time = 20 ns, when it changes to 1 and stays constant there after B = 1 at time = 0, and stays at 1 value until time = 35 ns, and then changes to 0 at35 ns, and stays constant after that. !3! %3D C= 0 at time 0 and changes to 1 at 50ns Plot A, B, C upto time = 70 ns.
10. We can implement D flip-flop with two back-to-back latches. Please build the D flip-flop that samples the input signal at the falling edge of CLK. CLK Q CLK Q D D
Design combinational logic for outputting the wait time associated with each state. For example, state 000 has the main street green light on for 15 seconds. The combinational logic for the input 000 would have an output 1111 corresponding to decimal 15. Let the outputs W3, W2, W1 and W0 represent a binary number corresponding to the wait time.
4. Implement the four-variable function below using a 2-to-4 line decoder with imverted outputs and a 4-to-1 multiplexer. The selection bits of the multiplexer must be a (MSB) and e (LSB). No supplementary gates are allowed, except for inverters. Show the logic diagram. Assume line decoder's inputs are ordered so that the MSB is at the top. The function is given through its minterm expansion: f(a,b,c, d) = Em(0,1,2,3,5,7,10,12,14,15), where a is the MSB.f
3. Implement the four-variable function below using a 2-to-4 line decoder (with 'normal' outputs) and a 4-to-1 multiplexer. The selection bits of the multiplexer must be a (MSB) and c (LSB). No supplementary gates are allowed, except for inverters. Show the logic diagram. Assume line decoder's imputs are ordered so that the MSB is at the top. The function is given as: f(a, b,c, d) = Em(0,1,5,7,8,14), where a is the MSB.
Question 2: A combinational circuit has 4 inputs (A, B, C, D) and 1 output (F). ABCD represent a majority function. The output of the majority function is equal to 1 if the input variables have more 1's than O's, otherwise the output is 0. a. Construct the truth table of the required circuit. b. Implement the minimized expression of F using 3-level all NAND gate circuit. Implement a 2-1Multiplexer using three-state buffers.
la. Draw the truth table for the following set of gates with inputs A, B, C and D and result R: NOT - A OR AND - B R OR NOT -C - -D - b. Use the truth table to generate a Booleanexpression describing the function (using minterms))
3(a): Consider the following circuit, which uses two D flip-flops with falling edge triggers along with -bit full adder. The flip-flops are controlled by a single clock, C. Suppose C, Q0 and Q1 all initially have the value 0. First, fill in the blanks in the "i " = 0 (initial state)" row to show the values of D0 and D1 at this initial time (assume the results of the adder have had time to stabilize) . Next, show the values of Q0 , Q1, D0 , and D1 once they have stabilized after the ith falling edge of the clock, where i ranges from 1 to 4. Note that both the A and Carry In inputs of the adder are (Q not ) Q'0 not Q0 None of these first four rows should be the exactly the same.
Q2.: Implement the Boolean function below using NAND gates only: Y= Ā B +CD
JK flip-flops, also colloquially known as jump/kill flip-flops, augment the behaviour of SR flip-flops. The letters J and K were presumably picked by Eldred Nelson in a patent application. The sequential digital circuit shown below shows the design of a JK flip-flop based on two SR NAND latches. Assume the circuit's output is Q = 0 and that the inputs are J = 0 and K = 0, and that the clock input is C = 0. (You can make use of the fact that we already know how an SR NAND latch behaves.) D Co D Ko a) Suppose J transitions to 1 and C' transitions to 1 soon after. Create a copy of the drawing and indicate for each line whether it carries a 0 or a 1. b) Some time later, C transitions back to 0 and soon after J transitions to 0 as well. Create another copy of the drawing and indicate for each line whether it carries a 0 or a 1. c) Some time later, J and K both transition to 1 and C transitions to 1 soon after. Create another copy of the drawing and indicate for each line whether it carries…