"Example for interactive mode"
"Flip flops using the extended part 'counter' are smaller while being faster and
having less timing and stability issues, and only change during a rising clock
edge."

"T flipflop (toggles at rising clock edge only if T is true)"

"T"   i****
          w
"Clk" i*>>*]c>*o
       **]*

"D flipflop (only sets D value in o at rising clock edge)"

"D"   i**>r<*** 
          w   * 
      i*>>*]c>*o
"Clk"  **]*     

"JK flipflop"
"On clock rising edge, output Q toggles if: (J and !Q) or (J and Q)"


  "J" i*]***+*+**
         *+]*]* ^
"Clk" i**>>*+>*]c>*o  "Q"
        **]*m   w
  "K" i*+++]*****


