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Answer:
Following are the code in java language
abstract interface PointingDevice // interface PointingDevice,
{
// abstract method getXCoord()
public abstract int getXCoord();
// abstract method getYCoord()
public abstract int getYCoord();
// abstract method attentionRequired()
public abstract boolean attentionRequired();
// abstract method setResolution( )
public abstract double setResolution(double a);
}
Explanation:
In this code we have declared a abstract interface "PointingDevice" which contains the four abstract method getXCoord of type int , getYCoord() of type int , attentionRequired() of type boolean and setResolution() of type double .
These method have only declaration not definition any interface or class which inherit the inteface PointingDevice must define all these four method otherwise it also be abstract .
Answer:
True
Explanation:
As computers become faster, memory access speed have not been keeping pace. In 1999, processor speeds went up from 90MHz to 500MHz, but during this same period, memory access have only gone from 120ns to 50ns. This shows that in this period, processor speed grew more than five times its value, but memory grew only 2.5 times its value.
Answer:
B) the time it takes for the required sector to position itself under the read/write head.
Explanation:
In Computer science, Access time is the time it takes for the required sector to position itself under the read/write head. It is usually measured in milliseconds.
It is the speed of the storage device.
Answer:
yes
Explanation:
i did some research but don't take my word for it and let me know if it wrong
