A centralized payment processing system is disclosed, which gives the user the ability to create payment outputs in a centralized environment. The facial regions are analyzed to determine if any of the facial regions includes a defect. A pair of diaphragm elements can form first and second process diaphragms, closing first and second pressure openings. 73; 20<Vd3\u2212Vd2<40; 80<FOV<100; and 1. Methods of use and assembly also are provided. An OS-friendly bootloader and methods are described that integrate an OS with a bootloader in any system in which a host processor and a client processor have a communication mechanism that requires the OS for the mechanism to work and the client has two memory systems: one visible to both host and client and one visible only to the client.