Getting Started; Preliminaries; Opening And Closing The Case - HP -28S Manual

1
Getting Started
This chapter first describes the calculator's basic features, then dem-
onstrates a simple calculation. Next, an annotated illustration of the
keyboard highlights the major features of the keyboard and display.
Last, you'll learn about the catalog of commands, which is a handy
guide to commands and how to use them.
Preliminaries
This section describes the calculator's basic features.
Opening and Closing the Case
The calculator forms its own case, opening and closing like a book. To
open the calculator, hold it with the hinge away from you and open it
with your thumbs.
18 1: Getting Started