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
What is Winchester technology? The disk and the read/write heads are placed in a sealed air-filtered enclosure known as Winchester technology.
Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4
Fundamental functional units of a computer: QUE. What are the fundamental functional units of a computer? Ans: A computer consists of 5 functionally independent major parts
The 2's complement of the number 1101110 is ? Ans. 1's complement of 1101110 is = 0010001 ans hence 2's complement of 1101110 is = 0010001 + 1 = 0010010.
What are Sequential Algorithms? The central assumption of the RAM model is that instructions are implemented one after another, one operation at a time. Accordingly, algorith
Q. Explain about Dual In line Memory Modules? A DIMM is capable of delivering 64 data bits right away. Usual DIMM capacities are 64MB and up. Every DIMM has 84 gold patted conn
Describe the purpose and operation of Register 2 (R2) for the MSP430
Explain various steps for analysing an algorithm. The several steps involved in analysis of an algorithm are: 1. For any algorithm, the first step should be to show that it
what is hashing in database management system?
Evaluation Functions: Evaluation functions calculate approximately the score which can be prove of guaranteed if a particular world state is reached. Same like in chess, evalu
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