Vtech Power Zone 2000 User Manual - Page 39

Other instruction, FALSE, close, print, cleartext, erase er, ERASE, eraseall erall, Flow control

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4. Other instruction edit load save open close print type cleartext (ct) pots erase (er) eraseall (erall) 5. Flow control instruction and: not: or: enter the LOGO editor and opens an edit window. transfer the contents of the file specified by its input from the disk to the orkspace. save the contents of the workspace to a file on the disk. open a device. If the specified file or device does not exist, OPEN outputs FALSE. close a device. print its inputs to the output screen. TYPE prints its inputs on the screen, and the prompt appears after the last character printed. clear output window content. print the titles of all user-defined procedures. POTS stands for "Print Out Titles". remove the definition of its input from the workspace. The input to ERASE must be a procedure name. remove all procedures and variables from the workspace. AND accepts one or more inputs which must be either TRUE or FALSE. AND outputs TRUE if all of its inputs are true; otherwise, it outputs FALSE. NOT outputs TRUE if its input is false; otherwise, it outputs FALSE. OR outputs FALSE if all of its inputs are false; otherwise,it outputs TRUE. OR accepts one or more inputs which must be either TRUE or FALSE. 31

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31
4. Other instruction
edit
enter the
LOGO
editor and opens an edit
window.
load
transfer the contents of the file specified
by its input from the disk to the
orkspace.
save
save the contents of the workspace to a
file on the disk.
open
open a device. If the specified file or
device does not exist,
OPEN
outputs
FALSE
.
close
close a device.
print
print its inputs to the output screen.
type
TYPE
prints its inputs on the screen, and
the prompt appears after the last character
printed.
cleartext
(ct)
clear output window content.
pots
print the titles of all user-defined
procedures.
POTS
stands for “Print Out
Titles”.
erase (er)
remove the definition of its input from the
workspace. The input to
ERASE
must be
a procedure name.
eraseall (erall
)
remove all procedures and variables from
the workspace.
5. Flow control instruction
and
:
AND
accepts one or more inputs which
must be either
TRUE
or
FALSE
.
AND
outputs
TRUE
if all of its inputs are true;
otherwise, it outputs
FALSE
.
not
:
NOT
outputs
TRUE
if its input is false;
otherwise, it outputs
FALSE
.
or
:
OR
outputs
FALSE
if all of its inputs are
false; otherwise,it outputs
TRUE. OR
accepts one or more inputs which must
be either
TRUE
or
FALSE
.