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- Resident Four Function Calculator
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-
-
-
- This is an IBM PC or compatible terminate and stay resident
- program that emulates a four function calculator. After it
- is loaded into memory by typing "ffc" at the DOS prompt,
- it can then be used by pressing Alt - F1. It displays what
- looks like a normal handheld calculator on screen, with the
- results of your calculations displayed at the top of the
- calculator in regular calculator fashion. The contents of
- the screen below it are saved and will be restored when you
- press the Escape Key. It will function with almost any soft-
- ware in either color or monochrome text mode (80 column).
-
- Use the numeric keypad for entry, along with the +, -, .,
- and the = sign for totals. The "c" key will clear to the
- calculator to zero and the "e" key clears the calculator
- to the previous entry or last result the first time it is
- pressed, and works like the "c" the next time it is pressed.
-
- The most recent modifications to this program include mods
- to force the number-locks key on during calculator use, and
- off afterwards. I also added a mod to turn the cursor off
- and then on after use. Rounding is to six decimal places,
- with all trailing zeros chopped off.
-
- The calculator can be moved around the screen by holding the
- shift key and pressing "<" or ">" to move right or left.
-
- This is a public domain offering and I will upload improved
- versions from time to time. I will soon complete a version
- that will emulate a full "slide rule" style calculator.
- For ease of use, you may want to rename the file from FFC4.
- COM to FFC.COM and replace any earlier version.
-
- December 4, 1987
-
- Enjoy it!
-
- Timothy Coleman
- 11115 Kenmoor Drive
- Detroit, Mich. 48205
- 313-526-8415 (voice only)
-
- Compuserve I.D.# 73036,1177
- GEnie address = T.Coleman