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

Choked nozzle and thrust correction - turbojet, Choked Nozzle Consideri...

Choked Nozzle Considering the formula for thrust under "choked" nozzle conditions: Thrust =(P-P 0 )A + WV j /g     Where: P = Pressure P = Ambien

Balanced investment strategy, Balanced Investment Strategy Portfolio manage...

Balanced Investment Strategy Portfolio management strategy where all assets are owed with the aim of avoiding excessive risk by diversifying investment athwart different asset clas

Flight dynamics - introduction, In the Aircraft Performance course, the air...

In the Aircraft Performance course, the aircraft was assumed to be in a steady-state (e.g. steady  cruise, climb, turn, glide), with the forces and moments balanced. The subject of

#title.welding., Does the atmospheric pressure inside of a tube aproximatel...

Does the atmospheric pressure inside of a tube aproximately a half an inch in diameter cause resistance against an end plug being flash welded to the end of it and what would be th

Propeller overspeed governors, PROPELLER OVERSPEED GOVERNORS: These dev...

PROPELLER OVERSPEED GOVERNORS: These devices protect against overspeed, they are separate governors to the P.C.U. and direct oil during an overspeed situation to coarsen the bl

Sonic airflow - aircraft maintenance, Sonic airflow though divergent and co...

Sonic airflow though divergent and convergent ducts When a flow of fluid (i.e. gas) flows at sonic speed through a convergent duct a shock wave forms at the exit area of the du

Propeller pitch control, Propeller pitch control: Before looking at pro...

Propeller pitch control: Before looking at propeller pitch control an understanding of the relationship between the 'Power Lever' and the 'RPM (condition / speed) Lever' with r

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