Using input/output interfaces

This chapter deals with embedded, real-time systems, which involves a significant amount of input/ output data transfers. The UNIX operating system handles devices using device drivers accessed through its standard file system. Interrupts play an important part in the transfer of data in and out from computer systems. Simulation and queuing theoretic studies are available to assist with finalizing a design. When an operating system provides the run-time support, it is important to investigate its API before making the purchase. To assist with sizing and scoping of the application, either simulation or queuing theoretic studies is carried out before finalizing the design.