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

Aerodynamics-boundary layers, Approach The Hanley solver does solve for ...

Approach The Hanley solver does solve for the boundary layer and potential flow (in a way we will think about later). However, it only gives us full access to the potential solu

Thermo electric thermometer, how thermoelecteric thermometer is contructed ...

how thermoelecteric thermometer is contructed and how it working

True or false, Beta coefficients and standard deviation may be used as indi...

Beta coefficients and standard deviation may be used as indicators of risk

Double acting propellers, Double acting propellers: This type of propel...

Double acting propellers: This type of propeller is normally fitted to larger engine and, because of engine requirements, is more complicated than the propellers fitted to smal

Ratio analysis, calculate inventory turnover ratio, when only given current...

calculate inventory turnover ratio, when only given current assets $100,000, current liabilities, $25,000 sales $200,000 and quick ratio=1.5

Microprocessor, software development cycle for 8086

software development cycle for 8086

Mode iii interlaminar fracture toughness , Mode III Interlaminar Fracture T...

Mode III Interlaminar Fracture Toughness  The Mode III interlaminar fracture toughness of a composite can be measured using the split cantilever beam (SCB) geometry. Here, a c

Duty cycle, how to modulate duty cycles

how to modulate duty cycles

The finite element method fem, The finite element method The fini...

The finite element method The finite element method (FEM), sometimes referred to as finite element analysis (FEA), is a computational technique used to obtain approximate

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