Latches and flip-flop circuits, Other Engineering

Latches and flip-flop circuits:

Latches and Flip-flop circuits are a combination of logic gates that perform basic memory functions for computers and peripherals. Both these circuits retain their output signal even when the input signal has been removed; therefore, these circuits "remember" the input data. Figure shows a RS Latch circuit.


RS Latch

The two inputs to the latch are "SET" (S) and "RESET" (R), with two output signals Q and Q (not Q). A logic 1 at the S input will set the latch memory and Q equals 1, while Q will be 0. Logic 1 at the R input will reset the latch and Q will equal 0 and Q will equals 1.

585_latch.png 
Flip-flop circuits are similar to latch circuits; however, flip-flops change their output when a trigger pulse is applied. A flip-flop circuit contains three inputs, the S and R signals are identical with the latch circuit, the "Clock Pulse (CP) is an input that controls the circuit switch time. Its output will only change state at given time intervals controlled by the clock pulse.

The advantage of using a clock input for a memory circuit is that all flip-flop output signals change at the same time. This becomes very important when several memory circuits are used simultaneously.

Figure shows a Flip-flop circuit.

607_latch1.png

 

Posted Date: 9/13/2012 9:34:07 AM | Location : United States







Related Discussions:- Latches and flip-flop circuits, Assignment Help, Ask Question on Latches and flip-flop circuits, Get Answer, Expert's Help, Latches and flip-flop circuits Discussions

Write discussion on Latches and flip-flop circuits
Your posts are moderated
Related Questions
Q. W hat do you understand by crystallographic notation of atomic planes/Explain with the help of examples. Ans.Crystallographic Notation 1. Crystal Symmetry:

FLUID (LIQUID) ICE PROTECTION SYSTEMS: Liquid ice protection systems can be used as either anti-ice or de-ice systems.  The system is designed to project a film or fluid over t

want a circuit manual of previous led moving dispaly

Capacitive transducers Consider a capacitor consisting of two parallel conducting plates with an insulator in between. Its capictance is C = ε 0 ε r  A/d where ε

different operating modes of npn transistor

how to find out the number of select lines while construcing a mux or a demux logic diagram?

I have a homework assignment with 12 present value and future value related investment problems. Can you guys help with me these types of problems please?


Hi, do u help with HYSYS assignment ?

Q. A. Microfinance case How would you value the price of a Microfinance Institution? Using data available on the net, explain what would you consider the value of SKS (India) or Co