This flip-flop is a type of toggle switch. Each time the clock and the input T are true, the outputs trade their states.
This is an unstable flip-flop, meaning that an oscillation occurs when T and the clock are true.
The master-slave T flip-flop fixes the issue. By using a second 'slave' latch which follows a 'master' latch, no oscillation will occur.
The stable master-slave T flip-flop is located here: http://everycircuit.com/circuit/6274138446757888
