AMSTRAD cpc 6128 User Instruction page 472

Transient program
A CP/M utility program such as PIP, which can be loaded into the TPA and run by
typing its name at the keyboard.
Truncated
A number or string that has been shortened by removal of leading or trailing
characters. Where intentional, the process may involve rounding the value. Where
unintentional, the extra characters are simply discarded to enable the number or
string to fit the available space.
Truth table
The results of a logical operation are either 'true' or 'false'. The computer interprets
these as being either 1 or 0, and the truth table lists the possible results of a logical
operation
(I
FA> B THE Ne) accordingly.
Turnkey
A word used to describe a program which executes automatically when the system is
booted.
Turtle
A graphic symbol, in the shape of an arrow head, that functions as a graphic cursor on
the Dr.Logo graphic screen.
Turtle graphics
The graphics image left on the screen by the movement of a turtle. As the turtle
moves it leaves a trace of its path on the screen.
Turtle step
The smallest distance a turtle can move. Normally one pixel.
UDK
User defined keys. The 6128 has up to 32 keys which may be redefined to perform a
variety oftasks.
Unsigned number
A number with no prefix to signify whether its value is positive or negative.
Glossary Appendix 2
Page
29