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Questions tagged [sequential-circuit]

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D flip flop : How does it work in depth

I'm coming to you today because I have some trouble to understand how works D flip flop in depth. Two weeks ago we started at school learning sequential logic and so register and everything that come ...
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0answers
114 views

How to make counters for irregular integral pattern?

I can easily make counter for consecutive numbers. But for patterns, described in below question, I'm quite unsure about my approach. Question - We want to design a synchronous counter that ...
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1answer
69 views

Single Input Single Output Sequential Circuit Explanation Required

I'm a student of Formal Methods in Software Engineering, I'm trying to study this question for two days but still haven't figured it out, I couldn't even find a similar solution or explanation, so ...
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1answer
61 views

small size and small depth circuit for set intersections

Input: Given sets $S_i \subseteq \{1,2,3,4,\cdots,n\}$ for $1 \leq i \leq n$. Output: sets intersection with restriction (pick first set $S_1$. If $a \in S_1$ such that $a$ is the least element then ...
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circuit for finding the index of first zero entry in a binary string

finding the index of first zero entry in a binary string: Input: binary string ($0$'s and $1$'s) Output: index of first zero entry Can you give a circuit for finding the index of first zero entry ...
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0answers
107 views

What is the purpose of a single input, single output, bidirectional shift register?

(source: edu.au) This is the sort of bidirectional shift register, I'm talking about. I understand why the normal right shift is useful, but when you shift it left, all you're really doing is sending ...
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2answers
460 views

D - Latch or D Flip Flop?

I have a diagram (http://imgur.com/cET8Q14) where it is either a D Latch or D Flip Flop. I am trying to figure out which one it is and why. If it is a D Flip Flip, I also need to know which input is ...
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158 views

Stepping through a sequence of grouped logic gates

I'm performing a simulation of protein-protein interactions. I'm using Python to code logic gates as functions to model protein interactions. My model is basically a series of groups (...
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0answers
257 views

Drawing Moore Finite State Machine Diagram

In an upcoming of an exam of 'Digital Techniques', we have to be able to design sequential circuits, and in particular we have to draw Moore FSM's when the equations for the output and next states are ...
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0answers
140 views

Functional Unit and Micro-operations Schematics

I'm sitting an exam on Computer Architecture in a few days and i'm stuck on a particular type of question. I'm asked to: Provide a detailed schematic for a functional unti that implements the ...
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1answer
21k views

What is the exact difference between a latch & a flipflop?

From what I have understood : A Flip Flop is a clocked latch i.e. flip flop = latch + clock Latch continuously checks for inputs & changes the output whenever there is a change in input Flip Flop ...
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1answer
207 views

Why S=1, R=1 Is forbidden in RS-Flip Flop [closed]

I have come across about RS Flip Flop & I have tried implementing that on a simulator & using actual logic gates. But I'm still not sure whether I have correctly understood the case unstable ...
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1answer
1k views

How to understand the SR Latch

I can't wrap my head around how the SR Latch works. Seemingly, you plug an input line from R, and another from S, and you are supposed to get results in $Q$ and $Q'$. However, both R and S require ...