Dave,? You should have gotten two little buttons to mount on the board. You can also connect external buttons, which is what I did. The clock will work with a 20x 4 LCD without modifications, except that the LCD's PC board is bigger and the holes don't line up. The link to the instructions for operation and programming is right under the link for assembly for firmware c1.03 :
?
--
73, Dan - W2DLC
Daniel Conklin