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

Functional checks of chemical de-icing systems, FUNCTIONAL CHECKS OF CHEMIC...

FUNCTIONAL CHECKS OF CHEMICAL DE-ICING SYSTEMS: Once the correct flow rate of the fluid supply has been established the distribution of the fluid flow over the blades should be

Fuel control in aircraft engine, Fuel control in Aircraft Engine: ...

Fuel control in Aircraft Engine: The basic fuel system is comprised of a fuel pump that receives low-pressure fuel from the aircraft fuel tank via a low pressure fuel valv

Aviation legislation - aircraft weight and balance, AIRCRAFT WEIGHT AND BAL...

AIRCRAFT WEIGHT AND BALANCE - Reference BCAR A5-4 or JAR-25.23 -29 After an aircraft has been constructed, painted and can be said to be ‘representative of its true empty (or

Reduction gearing in aircraft engine , Reduction Gearing : Compound epi...

Reduction Gearing : Compound epicyclic reduction gears enable a greater reduction in speed to be obtained without resorting to larger components. They may be of either the fix

Components of amplifier, Expertsmind.com brings you unique solution in el...

Expertsmind.com brings you unique solution in electrical engineering RESISTORS: Resistors are designed to drop the amount of voltage going through them, this allow

System architecture and design, The home work is to make an model based sys...

The home work is to make an model based system architecture for an electrical car. in Enterprise Architecture with SysMl language.

Resection, method of solving resection

method of solving resection

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