Either sequential access or direct access may be used to access data in memory. What are the advantages of direct access now on the most widely used devices? How can data written to a device be changed using sequential access if the device only supports direct access?

Either sequential access or direct access may be used to access data in memory. What are the advantages of direct access now on the most widely used devices? How can data written to a device be changed using sequential access if the device only supports direct access?

Systems Architecture

7th Edition

ISBN:9781305080195

Author:Stephen D. Burd

Publisher:Stephen D. Burd

Chapter11: Operating Systems

Section: Chapter Questions

Problem 22VE

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An operating system (OS) is the software which manages hardware and resources, like CPU, storage and memory. The OS bridges the applications and hardware and makes the connections between all of your software and the hardware resources.

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Either sequential access or direct access may be used to access data in memory.
What are the advantages of direct access now on the most widely used devices?
How can data written to a device be changed using sequential access if the device
only supports direct access?

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The data that is stored in memory may either be accessed sequentially or instantly. Both of these access methods are possible. Why has it become such a popular practice to have immediate access? How can a device that previously only supported sequential access be modified such that it supports direct access?
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