An integrated circuit delay device includes a digital delay line configured to provide a percent-of-clock period delay to a timing signal received at an input thereof, in response to a control signal. According to one such method, a location database is populated from a plurality of endpoint devices. After the addition of the diamine component, the pressure of the reaction system is reduced to atmospheric pressure over 50 min or more at a pressure falling speed of 1. The system may also compare the number of pixels of a predetermined color with the total number of pixels of the captured image.