A battery cover latching assembly for a portable electronic device includes a housing, a first cover configured for attaching to a first side of the housing, and a second cover configured for attaching to a second side of the housing. The method includes transforming a clock network into a clock tree that includes nodes with different clock signal arrival times and leaf nodes representing source and destination registers. The method is used to generate functional designs that are visually displayed for use by a textile designer or engineer. The design of the probe enables correct orientation of the transducers with respect to a blood vessel under measurements.