
2 Enter 3, a RPN Calculator for the MP2000
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Version: 2.1

2 Enter 3 is 'yet another RPN scientific calculator'.
It was developed and tested on the Newton 2000 under OS 2.1
The program is freeware.


Description:

RPN users should be familiar with almost all of the functions provided. 
This is a description of the less obvious:

- Handwriting is used to insert numbers. The '.', 'e' and '<-' buttons
  insert a decimal point, an e (exponent notation) and delete of
  the last character on the line, respectively.
  All standard HWR guestures can be used to edit the value.

- A small bulb to the left of the input line indicates a non-numeric
  content; such a value is not transferred to the X register.

- R(up) and R(down) scroll through the stack, which has a depth
  of 4 (X,Y,Z,T).

- VIEW displays the content of all registers. It uses the same number
  of digits as the main display.

- SHOW displays the current value of the X register with its internal
  (full) accuracy.

- x <> I spwaps the values of X and I; I is not an index register.

- Prefix f is cleared by pressing it again.


Tips and Notes:

1) The Newton/Apple math library distinguishes between 0 and -0.
   Example: 0 divided by -1 equals -0.

2) A double tap on the input line brings up the standard numeric
   keyboard. Using this keyboard however lets you insert characters
   which do not make sense. A future version will probably provide
   a tailored keyboard.

3) It is nicer to work with the HWR adjustment 'Transform my
   handwriting' set close to 'immediately' (see Preferences, HWR,
   Fine Tuning). A future version will probably set this (now global)
   adjustment for the edit line alone.



This program is freeware.
(C) 1997 Artifact
beyer@ksta.ktzh.ch




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