%% Flip-Flop Blocks Demonstration 
% 
% This demonstration shows how to use Flip-Flop blocks (found in the Simulink 
% Extras Library) to implement a Modulo-4 counter. The model takes the output 
% of a Modulo-4 counter and generates a half clock cycle width pulse on every 
% fourth clock pulses. Effectively, it produces a pulse whenever both outputs 
% of the Modulo-4 counter are equal to 1.
% 
% 

open_system('sldemo_flipflop')
sim('sldemo_flipflop')