Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Write short note on the Johnson counter.
Ans:
Johnson Counter: It is a synchronous counter, where all flip-flops are clocked concurrently and the clock pulses drive the clock input of all the flip-flops together therefore there is no propagation delay. Fig.(a) demonstrates the circuit of Johnson counter. In case of the D input of FF0 is driven by Q‾ output of FF3, that is, the complement of the output of the final flip flop is fed to the D of FF0. Feedback of this arrangement generates the sequence of states illustrated in Table no.1. The 4 bit sequence has a total of 8 states (there is n bit sequence will have 2n states). Therefore an n bit Johnson counter will have a modulus of 2n.
The Q output of all stage feeds the D input of next stage. Although the Q‾ output of the final stage feeds the D input of primary stage. The counter fills up along with 1's from left to right and after that fills up 0s again as demonstrated in Table no.2. Fig. (b) Demonstrates the wave shapes/timing diagram of 4 bit Johnson counter.
Fig.(a) Logic Diagram of Johnson counter
Clock Pulse
Q0
Q1
Q2
Q3
0
1
2
3
4
5
6
7
Table no.1 Sequence of states of 4 bit Johnson Counter
Fig.(b) Timing Diagram of 4-bit Johnson Counter
In this problem you are given a board in which some of the elements are placed as shown in diagram below. Each element represents a color. Fill the other elements in the board, suc
A Padovan string P(n) for a natural number n is defined as: P(0) = ‘X’ P(1) = ‘Y’ P(2) = ‘Z’ P(n) = P(n-2) + P(n-3), n>2 where + denotes string concatenation. For a string of t
Add 20 and (-15) using 2's complement ? Ans. Addition of 20 and (-15) by using 2's complement as (20) 10 = 1 0 1 0 0 (16
client server or multithreaded client-server, where server will create pool of worker threads (say 5) to provide services to pool of clients (say 5 ).Server should be behaving as a
Stencil Duplicating Equipment Required Stencil Duplicator Thermal copier (optional) Electronic stencil cutter Materials Stencil COPY paper Ink Clean
shorte note on hardware description language
What start bit and stop bit The first bit known as the Start bit is always a zero and it is used to show the beginning of the character The last bit is known as the stop bit
Q. Illustrate working of J-K flip-flop? J-K flip-flop is also a modification of SR flip-flop since it has 2 inputs same as S and R and all possible inputs combinations are vali
different types of Operating System
The following is a requirements specification for a simple game based on a player moving through a maze of connected rooms from an entrance door to an exit door. The required sy
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd