Java Reference
In-Depth Information
interact with the devices that control the display screen or the speaker. Because these
actions happen many times over and at great speed, the human user will perceive
images and sound. Similarly, the CPU can send instructions to a printer to mark the
paper with patterns of closely spaced dots, which a human recognizes as text
characters and pictures. Some program instructions read user input from the keyboard
or mouse. The program analyzes the nature of these inputs and then executes the next
appropriate instructions.
The CPU reads machine instructions from memory. The instructions direct it to
communicate with memory, secondary storage, and peripheral devices.
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Figure 5
Schematic Diagram of a Computer
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4.
Where is a program stored when it is not currently running?
5.
Which part of the computer carries out arithmetic operations, such as
addition and multiplication?
