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
can i get the comparison of microprocessors architecture?
A useful exercise in understanding assembly language and its relation to machine language is to take a short assembly language program and translate it to machine language by hand.
What is a resource-allocation graph? Deadlocks can be described more precisely in terms of a directed graph known as a system resource allocation graph. This graph having of a
Q. Illustration of an instruction cycle? Instruction cycle displayed in given figure comprises subsequent stages: First address of the subsequent instruction is calculat
Cut-off Search: By using a minimax search, all we have to do is program, in a game playing situation our agent to look at the whole search tree from the current state of the
Performance and Issues in Pipelining Speedup: Firstly, we get the speedup factor that is we see how much speed up performance we get through pipelining. First we get the
Explain Bottom-up Parsing Techniques A parser can begin with the input and attempt to rewrite it to the start symbol. Instinctively, the parser attempts to locate the most bas
In a subscriber loop that contains a series resistance of 300 ohms to protect the batteries in the exchange, a normalized telephone draws 10 mA and its standard input d.c. resistan
Q. Show the conflict in register? All micro-operations written on a line are to be executed at same time provided the statements or a group of statements to be implemented toge
What is SEGMENT - Assembler directives SEGMENT: This directive defines to assembler the start of a segment with name segment-name. Segment name must be unique and follows the
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