Latches and flip-flop circuits, Other Engineering

Assignment Help:

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

 


Related Discussions:- Latches and flip-flop circuits

flow solver, Flow Solver The flow solver of FP utilises data produced ...

Flow Solver The flow solver of FP utilises data produced by the grid generator, together with data read from an input file named FLOW.DAT, and proceeds to calculate the solutio

Physical chemistry, can you answer some problem from physical chemistry wit...

can you answer some problem from physical chemistry with a detailed approach why and how one should choose the steps in solving them.These are just random question that I have no c

Facilty design, List three advantages and three disadvantages of open offic...

List three advantages and three disadvantages of open office spaces.

Layout and operation of typical thrust reversing system, Layout and operati...

Layout and operation of typical thrust reversing system: Clamshell door system The clamshell door system is a pneumatically operated system, as shown in detail in fig Norm

Decision table software engineering, Write a decision table that specifies ...

Write a decision table that specifies the rules for the game of checkers.

Aviation legislation design and type certificate, Design, Construction and ...

Design, Construction and Type Certificate The following chapter covers the initial design, construction, registration and test flying of the first prototype of a new aircraft.

Static machines, briefly differenciate the moore & mealy machines

briefly differenciate the moore & mealy machines

Fire alarm systems, Fire alarm systems: All buildings require a means ...

Fire alarm systems: All buildings require a means by which the warning  of  fire  can  be  given  to  all occupants.  In the very smallest premises this might be achievable by

Tunnel diode, equivalent circuit of tunnel diode

equivalent circuit of tunnel diode

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd