Devices

Devices are similar to Libraries. They provice APIs to access hardware devices connected to PC. To access a hardware device, the corresponding device need to be opened. Devices can take certain commands and serve.

Two different kind of communication is possible with devices. Synchronous and Asynchronous. Exec Library provices access methods for both of these kind of communication to opened devices. After opening the concerned device, Exec functions are called to pass on device commands. Both synchronous and asynchronous methods are available to command a device. Additionally, devices provide simple functions which are normally synchronous in nature.