Apple IIgs - Manual (Page 73)

Page 73 of 84 II gs
Printed: Thursday, July 25, 2002 12:14:50 PM
Most commercial information services are full-duplex.
function: A built-in formula you can use to calculate an average, a square root, and the like.
function key: A key that tells the application to carry out a particular activity or function
(print a document, save a document, and so on). Some applications use the number keys on the
numeric keypad as function keys.
garbage: A string of meaningless characters that bears no resemblance to your document. It's an
indication that your computer and peripheral device are using different bauds or data formats.
graphics: Information presented in the form of pictures or images.
graphics mode: A way of displaying text and graphics on the screen. In graphics mode, images
are formed by patterns of dots.
graphics tablet: A device for drawing pictures. A special pen sends out signals that are
detected by wires in the tablet and sent as X and Y coordinates to the screen.
hacker: A person who is on a first-name basis with RAM, ROM, and the microprocessor. A person
who'd rather write application programs than use store-bought programs.
half-duplex modem: A modem that does not echo information it receives from the sending
computer.
hand controls: Computer accessories used mainly in games to move creatures and objects. Also
used in simulation applications.
handshake signal: A signal that regulates the flow of data between the computer and peripheral
devices.
hard disk: A storage device that can hold the equivalent of dozens of 3.5-inch disks.
hardware: Those parts of the computer that you can see and touch. The computer and the machines
that attach to it: the disk drive, printer, and other peripheral devices. Compare software.
header: Text that appears at the top of every page or every other page of a document. Compare
footer.
highlight: To select something on the screen to distinguish it from other choices.
high resolution: A graphics mode that can display information using a rectangular array of 280
horizontal by 192 vertical dots.
home computer: A computer, like the Apple IIgs, that is small enough and affordable enough to
have in your house. (When you take a
home computer to the office, it becomes a productivity
tool. )
home control device: A device that can regulate the temperature of your home, turn lamps on and
off, or monitor smoke detectors and burglar alarms.
home finance application: An application that helps with budgeting, portfolio management, tax
planning, and so on. Like a spreadsheet, only easier to use.
home row: The row of keys on the keyboard where the fingers of touch typists rest when they
aren't reaching for other keys. In the standard keyboard layout, the home row contains A, S, D,
F, G, and so on. In the Dvorak keyboard layout, the home row contains what August Dvorak
determined were the most frequently used keys (A, O, E, U, I, and so on).