Half-Duplex Mode: Allows transmission in only one direction at a
time; if one device is sending, the other must simply receive
data until it’s time for it to transmit.
Hardware: Physical components in a computer system such as
keyboard, disk drive and printer.
Hexadecimal: Refers to the base-16 number system. Machine
language programs are often written in hexadecimal notation.
Home: The upper-left corner of the screen.
1C: Integrated Circuit. A silicon chip containing an electric circuit
made up of components such as transistors, diodes, resistors
and capacitors. Integrated circuits are smaller, faster and
more efficient than the individual circuits used in older
computers.
Increment: To increase an index variable or counter with a
specified value.
Index: The variable counter within a FOR . .. NEXT loop.
Input: Data fed into the computer to be processed. Input sources
include the keyboard, disk drive, Datassette or modem.
Integer: A whole number (i.e., a number containing no fractional
part), such as 0, 1, 2, etc.
Interface: The point of meeting between a computer and an
external entity, whether an operator, a peripheral device or a
communications medium. An interface may be physical,
involving a connector, or logical, involving software.
I/O : Input/output. Refers to the process of entering data into the
computer, or transferring data from the computer to a disk
drive, printer or storage medium.
Keyboard: Input component of a computer system.
Kilobyte (K): 1,024 bytes
GL-8
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