title: How to define clock input in Xilinx
body: <p>Hey, I have almost no experience with Xilinx. I have a group project for a Digital Logic course that is due soon, where my partner, who was supposed to take care of the Xilinx simulations decided to bail on me. So here I am trying to figure it out last minute.</p>
  
  <p>I have designed a synchronous counter using a few JK Flip Flops and I need to define the CLK input for the FJKCs.</p>
  
  <p>I have drawn up the correct schematic, but I cannot figure out how to define a clock input.</p>
  
  <p>Any help appreciated, and yes, this is homework. I just can't find any basic xilinx documentation/tutorials online and I honestly don't have time to learn the whole IDE.</p>
  
  <p>I'm using VHDL</p>