JSS2 Computer Studies Lesson Note on Examples of Utility Devices

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Utility: this is a kind of system software designed to help analyze, configure, optimize and maintain the computer. A single piece of utility software is usually called a utility or tool. They are used for general house-keeping functions of the computer such as repairing the computer, copying, sorting files etc.

EXAMPLES OF UTILITY

• Norton utilities
• Antivirus,
• Scandisk
• Windows explorer, etc

Device Driver: A device driver is a computer program that operates or controls a particular type of device that is attached to a computer. A driver provides a software interface to hardware devices, enabling operating systems and other computer programs to access hardware functions without needing to know precise details of the hardware being used.

A driver communicates with the device through the computer bus or communications subsystem to which the hardware connects. When a calling program invokes a routine in the driver, the driver issues command to the device. Once the device sends data back to the driver, the driver may invoke routines in the original calling program. Drivers are hardware dependent and operating-system-specific.

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