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HP -28S Quick Reference

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Brand: HP

Category: Calculator

Type: Quick reference for HP HP-28S

Pages: 49

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HP-28S
HP-28S Quick Reference
General
List of
contents
See at the end of this document.
HP-28S Famous calculator made by Hewlett-Packard from 1988 – 1992.
Memory 32768 bytes for stack, programs and data.
Approximately 31.6 kBytes available to the user.
Contrast
adjustment
Press and hold ON then press + or – to change the contrast.
Number
resolution
56 bit for real numbers, 12 decimal digits of precision, exponent
range ±499
64 bit for binary numbers
The Stack The HP-28S is a stack-based calculator.
For details on using the stack see STACK Menu.
Commands
and Menus
Commands can be entered by typing their name explcitly.
Most commands and functions are organized in menus, some are
directly available on the keyboard. See Direct Key Commands.
SYSEVAL is the only command which neither accessible thru the
keyboard not thru a menu. See System Operations.
Some commands are present in multiple menus.
Endless-loop
interruption
See System Operations. Note that a program or other lengthy
operations can usually be interrupted by pressing "ON".
Audible
feedback
Can be turned off by clearing flag 51, see Flags.
HP-28C The main difference is the smaller memory of only 2 kByte.
And whereas the HP-28S comes with a software version "2BB" it is
"1BB" for the HP-28C.
Manuals At least four editions of the Reference Manual exist: Version 1 dated
October 1987 to version 4 dated November 1988.
This Quick Reference is based on my experience with a HP-28S version
"2BB". It is best described by edition 4 of the Reference Manual.
Author A. Thimet, V1.0, © 2003, all right reserved.
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