I always used to like this word Flip -Flop …although touched my books when the date of exams was declared..This subject “Digital Electronis ” has always fascinated me… Flip-Flop: In digital circuits, a flip-flop is a bistable multivibrator, an electronic circuit that has two stable states and thereby is capable of serving as one bit of memory.Thats how wikipedia defines it… but trust me its just a game of 0’s and 1’s…. Since it has two states 0’s or(and)1’s..It a bistable multivibrator.
Set-Reset flip-flops (SR flip-flops)
The most fundamental flipflop is the simple SR latch (or simple SR flip-flop), where S and R stand for set and reset. It can be constructed from a pair of cross-coupled NOR (negative OR) logic gates.The S and R are its set and reset inputs respectively. Please check this for details:
http://en.wikipedia.org/wiki/Flip-flop_(electronics)
| SR latch operation | ||||
|---|---|---|---|---|
| S | R | Action | ||
| 0 | 0 | Keep state | ||
| 0 | 1 | Q = 0 | ||
| 1 | 0 | Q = 1 | ||
| 1 | 1 | Unstable combination, see race condition | ||
Race condition …where you do not know what state will be the output..interesting:)
Mindless blogging 