In an IC implementing synchronous logic, a clock tree distributes a clock signal to many devices within an IC such as {HEAD ~ registers}, latches and flip flops that are clocked by {TAIL ~ the clock signal} 
In an IC implementing synchronous logic , a clock tree distributes a clock signal to many devices within an IC such as { HEAD ~ registers } , latches and flip flops that are clocked by { TAIL ~ the clock signal }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL