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Input/Output Services:
Every operating system, large or small, provides input/output services for each device in the system. The operating system includes I/O device driver programs for each device installed on the system. These drivers provide services to the file management system and are also available, through the API, to other programs for their use. The I/O device drivers accept I/O requests and perform the actual data transfers between the hardware and specified areas of memory.
Devices drivers for newly installed devices are added and integrated into the operating systems. In Windows, this capability is known as plug-and-play.
The operating system is the layer among the hardware and the programs you run. It provides programs a standard interface to the hardware; or else every program would need to includ
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Input and Output Devices : The most common input devices that you will see in your PC are the keyboard and the mouse. The keyboard of the computer looks like the keyboard o
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Mainframe Architecture: Till a few decades back, all computing was controlled through the central mainframes server. Multiple users could connect to the central host through u
Input unit: These are used to read data and transfer to primary memory contained in CPU through keyboard or floppy disk or mouse etc. Central Processing Unit (CPU): This consists o
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