http://www.hardwaresecrets.com/imageview.php?image=3740 [Broken] Referencing the above image, I have a few a questions. 1) I think CLK means clock input; does CLR perhaps mean clear? 2) What exactly is the role of the output buffer? 3) I'm confused as to how the control logic exactly functions and what components it would be constructed from. I'm not looking to use an MCU.