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A given computer system includes a hard disk with direct memory access (DMA).
(a) Suppose a user application needs to change a single byte within a disk block. Sketch, in order, all communications that must take place between the processor and the hard drive to complete this operation.
Atm
A unit of pressure defined as being equal to the pressure exerted by the Earth's atmosphere at sea level; approximately 101.325 kPa.
Volume
The amount of space that a substance or object occupies, or that is enclosed within a container.
°C
a unit of temperature on the Celsius scale, a measure relative to 0°C for the freezing point and 100°C for the boiling point of water at sea level.
Atm
An abbreviation for atmosphere, a unit of pressure equal to the pressure exerted by the Earth's atmosphere at sea level.
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