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
what are the obstacles which are likely to encounter chain survey and how to overcome them.

draw diagonal scale of rf 1/500 and show 57.5m on it

Removing Aircraft Engines: To prepare an aircraft for engine removal, check that the aircraft weight and balance will not be adversely effected when the engine is removed. Mos


a part of machine has a reciprocating motion which is simple harmonic making 200 complete oscillations in a minute.the part weight 45 N.determine the accelerating force upon it

how to draw a circuit to determine the parity of a 4-bit binary number?

Q. Describe the four main methods of strengthen crystalline materials against plastic yield. Ans. (1) Work Hardening: Strain hardening or work hardening is a phenomenon which

EXPLAIN THE WORKING OF BASIC N-CHANNEL MOSFET SWITCH


QUESTION 7 As a forensic materials expert – you have been asked to identify a metallic powder found on the clothing of someone suspected of fabricating an incendiary device used i