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
can we construct a body area sensor network in matlab as in ns-2.

Here, it is assumed that the crack is effectively longer than the value measured on the side of the specimen. If one assumes that it is longer by an amount Δ, then the new crack le

I would like to ask in detail. How can I attach the files?


The terms roving and yarn are widely used. A roving is a collection of untwisted strands wound together. A yarn is a generic term for a continuous strand of textile fibres, filamen

INVALIDATION OF CERTIFICATE OF AIRWORTHINESS Listed below are the four major reasons why a Certificate of Airworthiness could become invalid. There may be other specific reason

Smoke control - fire protection engineering: Smoke control is a complex subject and requires a course of at least one whole week to begin to understand how it is used in build

How i can have the FLM if i dont have the Total Assets or Shareholders Equity

Design an ECG filter .

IGNITION SYSTEMS The outline of a high energy ignition system is illustrated in the figure. Each high energy ignition unit has a low voltage supply which is controlled by the