Appendix H
Glossary
This section contains definitions for terms used in this manual. Review and familiarize yourself with these terms before using PT Program Generator (PPG) to create custom programs.
Call node | A Call node executes a branch to a subroutine. |
columns | The display screen of your PSC portable is divided vertically into six- |
| teen columns, numbered 0 through 15. |
Copy node | A Copy node is used to transfer information from one file or register to |
| another file or register. |
data collection | Data collection is the process of gathering information by scanning bar |
| codes or using data keys to enter values into a portable. |
Display node | A Display node is used to define messages to appear on a portable’s |
| screen. |
field | A field is a place in a register for the entry of or access to a specified |
| type of data. Fields and their locations in a register are defined by tem- |
| plates. |
file | A file is a storage location for data. Flow charts you create in PPG are |
| stored in files on your PC. Portables use a different type of file for stor- |
| ing collected or downloaded data (see portable file). |
Frames | Frames are the objects you use to create the general flow chart of your |
| |
| major function or option. Typically, a program's frames include a Main |
| Menu frame and a frame for each option on the menu. Links connect |
| the frame in a way that indicates program flow. |
Function Nodes | Frames and Subroutines are referred to as Function Nodes. |
| Refer to Operation Nodes for Menu, Display, Input, Output, Ver- |
| ify, Copy, Modify, Math, and Call. |
parse | To divide or dissect data into logical component parts. |
index | An index is a number used to access a single record in a file. |
User’s Guide | 179 |