The movement into open source communication for drivers has created a different set of tools for PCs.  While Linux is focused on a kernel based framework, newer applications are now being added to enhance performance.  This includes block device drivers and character device drivers.  Both are used to provide higher communication levels through the Linux system while allowing the framework to work more effectively with open source.

The character device drivers are known to provide communication through the I/O, or input / output stream.  Tape drives, serial ports and other extra applications are typically handled through this type of driver.  The combination of functions in the character device driver include basic communication from the main driver to a component, such as a USB or additional hardware.  These combinations are combined with memory commands to provide faster communication from the driver to the interface.

The character device drivers are then divided into three main categories.  The first is the byte stream I/O, which is responsible for interfacing with the devices that are added into the computer.  For instance, if you have added a USB to your computer, the byte stream will locate the device and will begin to connect it to the operating system.  The second type of character device is the memory mapped devices.  This works by providing memory from the device to the driver, which provides compatibility for mapping and communicating specific applications.

The third type of character device driver is known as STREAMS.  This differs from the other two character device models because it has a specific programming and coding method used.  Typically, these will be added into networks and terminals, instead of the devices that are added into the computer.  The STREAMS are responsible for uploading of various data as well as configuration of support that is needed for the operating system.

With these three types of character device drivers for Linux, is the ability to have driver operations that are more compatible with high performance and better functioning.  Communicating from the computer operating system and to remote devices as well as networks, gives Linux higher performance by using character device drivers.

Related posts:

1. Linux Device Driver Models
2. Linux Drivers Move Into New Frontiers
3. Development of Specific Device Drivers
4. Development of Solaris Device Drivers
5. The Design Behind Device Drivers