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Simtel MSDOS - Coast to Coast
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README
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1991-05-28
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This file contains a short description of CALCULATOR version 1.0.
-----------------------------------------------------------------
CALCULATOR is a memory resident program (TSR) which, after installation
in memory can be invoked at any moment by pressing a hot-key combination
(Alt-Shift).
To install CALCULATOR in memory just type in CALC and press <Enter>.
After that you will see a one-page message from the authors of the program.
From now on, CALCULATOR stays in memory (it takes around 80KB of RAM).
You can invoke CALCULATOR by pressing Alt-Shift keys simultaneously.
When you do it, a calculator pops up on the screen, even if you are running
another program e.g. a text editor.
FUNCTIONS OF THE CALCULATOR
---------------------------
<BIN> BINary mode < ( > open bracket
<HEX> HEXadecimal mode < ) > close bracket
<DEC> DECimal mode <TAN> TANgens
< C > Cancel last operation <SIN> SINe
<CA > Clear All <COS> COSine
< + > addition < % > percent
< - > subtraction <LOG> decimal LOGarithm
< * > multiplication <LNx> Natural Logarithm
< / > division <e^x> e to the power of x
< = > display result < π > pi
<NEG> NEGation <1/x> 1 divided by
<°F > switch to Fahrenheit mode < x²> square
<°C > switch to Celsius mode <√x > square root
<Mwr> WRite to Memory < !x> factorial
<Mrd> ReaD from Memory <x^y> x to the power of y
Additional functions:
---------------------
Press <F1> function key to display a help window.
To enter a number use numeric keys : <0>..<9>, <->, <.>.
Use <E> key to enter the exponent.
To select a function position the cursor on the, appropriate key using :
<Arrow Keys>, <PgUp>, <PgDn>, <Home>, <End>, and then press <ENTER>.
The line above the display is the Status Line.
The Status Line contains the information about the current mode of the
calculator :
- BINary, HEXadecimal, or DECimal mode of display ;
- DEGree or RADian mode for trigonometric functions ;
- °Celsius or °Fahrenheit mode ;
- ( - number of open brackets entered ;
- ) - number of close brackets entered.
History window displays a list of intermediate results and operators used.
Pressing <Esc> closes CALCULATOR but it remains in memory, so you can
invoke it as many times as you like.
If you want to remove CALCULATOR from memory just press Ctrl-Shift
simultaneously when you are at the DOS prompt.