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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.
E-MAIL: Internet has changed the art of writing letters to email. Email is one of the ways on Internet to send messages to another person across the network. E-mail and posta
why do computer have internal memory as a part of cpu and the internal bulk memory seprately?
Mike sells on the average 15 newspapers per week (Monday – Friday). Find the probability that 2.1 In a given week he will sell all the newspapers [7] 2.2 In a given day he will sel
URL services has two divisions. Basic webpages and custom webpages. Ricky Vega, Custom's manager wants to find out why Custom is not profitable. He has prepared the following repor
Read only memory (rom): The problem with RAM is that its memory is volatile, i.e. it loses all its data when the power supply is removed. A non-volatile memory is a permanent
• CPU Structure This section, with a simplified model of a central processing unit as an instance, takes you through the role of each of the major basic parts of the CPU. It also l
what is the need of a port in a computer?
Systems Life Cycle Approach Systems Analysis and Design follows a life cycle for development, as shown below. Brief discussion on this approach is given here: Figure
construct a tree where preorder is ABCDFGE
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