Hi i need to design memory circuit

 

Well, look at flip flop construction. You can store a 1 or a 0, set and reset it, clock data into it, and toggle it depending on how you hook it up.

 

well, look at flip flop construction. You can store a 1 or a 0, set and reset it, clock data into it, and toggle it depending on how you hook it up.

thanks i need to do it by using transistor not chip

 

There are two transistorized flip-flops at the top of this page:
http://www.bowdenshobbycircuits.info/page9.htm