Working of SR latches

[akki199421]

I don't fully understand the working of sr latch....i have a prblm..consider a condition when S=0 and R=1 and Q=1 ,then what will be the output....and when S'=0,R'=1 and Q=0.

plz rply..

 

[verylsi]

Can you please clear what do you mean by output.. ? if Q is not.
and another thing is with your conditions you flipped S and R which is not conventional and if we forget about Q for now then these are just NOR gated SR latch and NAND gated SR latch.. so it would help if you can share the source of your problem , or its just an hypothetical condition?

 

[BradtheRad]

It might help to watch an interactive simulation of an SR flip flop in its simplest form.

The link below is to a SR flip-flop made from 2 transistors.

It will open the falstad.com/circuit website, load the schematic and run it on your computer. (Click Allow to load the Java applet.)

http://tinyurl.com/b9lu8rj

Click the two logic inputs at the bottom (momentary switches labeled 'set' and 'reset').

You can watch the outputs change state.