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online To be communicating with another
computer through a modem or network.
You are online when you log on and
establish a connection. You are offline
when you lose or terminate a connection.
See modem. See also network.
online Help A manual that displays on
the screen while you are actually working
in a program and need help. It can be
accessed through the Help menu at the top
of the screen. Help for Windows can be
accessed from the Start button on the
taskbar.
online shopping Ordering products on
the Internet. You can purchase books,
flowers, music CDs, toys, groceries,
stocks, airline tickets, and used cars.
OS (operating system) The interface
that permits a person and a computer to
"talk" to one another. Microsoft Windows,
the most popular operating system,
displays icons, menus, and dialogue boxes
to find out what you want. You use a
mouse and keyboard to reply. See
Microsoft Windows. See also interface.
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parallel port A connector on the back of
the computer for plugging in a parallel
cable attached to a parallel device, such as
a printer. Data is transferred, one byte at a
time, through eight data wires (one for
each bit in the byte). All eight bits travel
side by side and arrive at the same time.
A parallel port is faster than a serial port,
which lets data through one bit at a time.
See digital. See also serial port.
path A sequence of information that
directs the operating system to a file. For
example, C:\Windows\Clouds.bmp is the
path to a bitmap file named Clouds. It is
located in a folder named Windows, which
is located on the C drive.
PC card A removable device that is
designed to plug into a PCMCIA slot to
accommodate devices such as a modem,
fax, and rotating storage media.
peripheral An external device connected
to a computer. Examples are a monitor,
keyboard, mouse, printer, scanner,
joystick, and digital camera.
pixel One of the individual dots, or picture
elements, that compose a graphical image.
See graphics.
playlist Tracks chosen to play from a CD
or DVD.
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