Known as AT&T IVS-5, the software supports a variety of computer-based information services using either NAPLPS, Prestel or ASCII protocols.
Keyfax supports both NAPLPS and ASCII display protocols, making it accessible to virtually all home computers.
Videolog uses the NAPLPS graphics protocol so that users can view full-color displays of logic and circuit diagrams, component shapes and performance charts on their PC screens.
You would access a service such as CompuServe in ASCIII mode, and then, when you are ready to view a NAPLPS graphics file, simply toggle to NAPLPS mode.
EXE, is a program that will permit you to create your own NAPLPS graphics files.
Macintosh NAPLPS software is not quite as far along.
While the NAPLPS protocol is not widely used at the present time, there are some systems that contain these graphics.
Known as AT&T IV-5, the software is intended to support a variety of computer-based information services using either NAPLPS, Prestel or ASCII protocols.
The system has a tree-structure design and also includes keyword search and NAPLPS software packages.
When personal computers with NAPLPS graphics capability become available, Bank of America will be able to upgrade its service to accommodate other videotex-style offerings.
For users satisfied with eight colors and not needing high-level graphics, Prestel offers an inexpensive and technically proven alternative between ASCII devices that have virtually no graphics capability and NAPLPS devices, which are much more expensive.