A cardiogram waveform correcting and displaying device is disclosed that is capable of facilitating visibility of cardiogram waveforms. The pipe comprises a liner for confining the fluid, an armoring layer surrounding the liner, and an outer protective sheath surrounding the armoring layer and allowing radial expansion and contraction of the armoring layers. The OAI logic gate is configured to generate a gated clock signal by inverting an input clock signal responsive to one of a timing-sensitive clock enable signal and a timing-insensitive clock enable signal being active. The weight distribution and location data may be correlated to the item identifier for a scanned item so the items in the checkout area may be tracked.