Radio Shack Telephone Interface II Operation Guide

Programming Hints for Programs to be Used With the Network 3
Successive printer requests from a Student Station should be made with a minimum
of delay between
them. Do all of the necessary processing before beginning to print
the results. This will prevent print requests from other Student Stations from being
printed in between the start and finish of your document. This technique will also
prevent blank lines from appearing in the middle of your document. A void keyboard
input in the middle of a printing activity to prevent interference from other print
requests.
Disk file processing should also be kept as short and fast as possible. One way to
do this is to write subroutines which open and close the files that will be used in
the program. When you need the file, call the opening routine, process data in or
out,
and call the closing routine before doing anything else. This technique is
unnecessary for an independent computer, but is recommended when more than one
Student Station will be calling the same file.
These procedures
are recommended because Network 3 allows only one Student
Station to use a single data file at a time. All other Stations are locked out until
that Station closes the file. For the same reason, you should avoid keyboard input
between opening and closing a file. Always prepare all data before opening the file,
and close the file before the next processing or input point.
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Radio Shack Telephone Interface II Specifications

General

Brand	Radio Shack
Model	Telephone Interface II
Category	Desktop
Language	English