MANUAL FOR CALCEXE (BBC BASIC)
This file describes the program CALCEXE which is in effect a complete
graphical calculator like those sold by Casio,but on a BBC,or indeed for use
on any machine that interprets BBC BASIC.
The manual is (C)1997 SPROW and software is (C)1996 SPROW
INSTRUCTIONS-
At the BASIC prompt,type CHAIN"CALCEXE"
Depending on which filing system you're using,you'll need to alter some
filenames.These are all held in the Extensions part of the calculator,and have
a file name such as 'CALCEXT'.Or similar.Simply edit this to suit the
filenames you've chosen.
The program will then draw the calculator on the screen,in MODE 4.
The calculator uses the BBC's EVAL command for its interpretations,so data
must be entered in the format that it understands.Also,fractions can be
entered by pressing the 'fractions' button.See keypresses below.
Of more interest are the add on options:
*Graphics - display any graph on cartesian axis at any scale in any quadrant
- regress a set of data linearly of curved to return to the
generating equation
*Intercepts - for the cross over of two or more curves
*Solver - solves simultaneous equations
Keys used:
Esc End P power
Tab Toggle the sign ^2 xý
Del Backspace one r root
Spc AC ^r xth root
Return = i invert
t tan ! Factorial
^t tan-1 p insert ã
s sin F0 help
^s sin-1 m memory - RECALL (r)
c cos - CLEAR (c)
^c cos-1 - ADD (+)
l log to base 10 - SUBTRACT (-)
^l 10x o option - SIMULTANEOUS (1)
n log to natural base - QUADRATIC (2)
^n ex - CUBIC (3)
f fraction mode - GRAPHS (4)
KNOWN PROBLEMS/FUTURE ENHANCEMENTS-
No known problems
HISTORY-
V1.00 Original sent to BBC disk user groups,converted from a program
originally written for a PC