Suppose the head of a moving head disk with 200 tracks numbered 0-199 is currently serving a request at track 143. It has just finished a request at track 125. If the queue of requests is kept in the FIFO order, 86,147,85,177,94,150,102,175,130 What is the total head movement to satisfy these requests for the following disk scheduling algorithms?  First Come First Served  Shortest Seek Time First  SCAN

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Fundamentals of memory

A collection of connected storage devices form the memory unit. It is a space to store data and instructions required for processing. Information is stored in a memory unit in the form of bits. There are two types of memory namely: