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- UCALC v3.2 (11-21-96)
- ==========
-
- Feature added
- --------------
- o 3D surface plotting with hidden line removal
-
- Changes
- -------
- o There's a batch file for the graphing demo (PLOTDEMO.BAT)
- o Values are displayed when variables are defined
- o A command in UCALC.DEF makes UCALC load under a blue background
- o Now I have an official web page for UCALC
- http://members.aol.com/Dancorbier/ucalc.html
-
- Bug fix
- -------
- o Text can be placed anywhere on the screen (even beyond row 25 in VGA mode)
- o Straying graphic cursor on systems without a mouse is fixed
-
-
- UCALC v3.0, v3.0c (3-31-96, 4-17-96)
- =================
-
- Features added
- --------------
- o TSR window can be moved or resized (with <Ctrl>+Arrow or <Alt>+Arrow)
- o Mouse support
- - User can check out coordinates using the mouse
- - Left button zooms in, and right button zooms out
- o PLOTF command sends graph data to a file
- o The equation solver can now display multiple answers
-
- Bug Fix
- -------
- o SEC, CSC, and COT functions now work properly in degree mode
- o Multiparameter functions with nested definitions work properly now
-
- UCALC v3.0 was released before a certain deadline, and submitted only
- at one location. UCALC v3.0c is a re-release with small fixes to the
- documentation and the program.
-
-
- UCALC v2.8 (3-13-95)
- ==========
-
- Features added
- --------------
- o TSR (allows user to pop UCALC up at any time by pressing a key)
- - Takes less than 6K of main memory (when using EMS or file)
- - User can choose hot key
- - " " " EMS, Main memory, or file
- - User can paste the result when exiting
- - TSR mode is optional. It's loaded by typing "UCALC /TSR"
- - UCALC can be unloaded from memory
- o Menu for graphing which supports the following by pressing a key:
- - Tracing
- - Zooming
- - Area filling
- - color changing
- - grid/axis toggle
- - dot/connect toggle
- - monochrome toggle
- - graph redraw
- o Text can be added on the graphic screen at the cursor location
- o PPLOT, or PLOT with no arguments recall previous equations for plotting
- o Equations in the form y=f(x) can have a domain, ex: "PLOT 1/x, 1 to 5"
- o DOS redirection can be turned off for faster screen output
- o Built-in support for MCGA
- o COLOR command to change text color
-
- Commands which are new, or enhanced include: COLOR, GCOLOR, GRID, AXIS,
- ZOOM, PLOT, PPLOT, REDIRECT, CONNECT, PASTE, EXIT (TSR), and MODE (MCGA)
-
- Changes
- -------
- o More pages have been added to the help screen
- o The commands in the help screen are in alphabetical order
- o The PLOTDEMO file has been changed to reflect new graphing features
- o The shareware version is the same as the registered version, except
- for registration reminders.
-
- Bug fix
- -------
- o An error message is displayed when the incorrect number of parameters
- is entered in built-in functions.
- o Axis line markers are centered correctly when fractional numbers are
- used in the WINDOW command.
-
-
- UCALC v2.4 (8-16-94)
- ==========
-
- Features added
- --------------
- o Graphic plotting:
- - Fast plotting
- - CGA, EGA, Hercules, and VGA modes
- - Cartesian, Polar, and Parametric graphs
- - LINE, FILL, and RECTangle commands
- - Data from another file can be plotted
- - Support for up to 16 supper-imposed multi-color user graphs
- - Smart crosshair (moves gradually faster as you hold arrow keys)
- - Adjustable screen coordinate system
- - Adjustable precision for graphs
- o Ucalc now supports the factorial symbol (!).
-
- Changes
- -------
- o The syntax for several commands is more flexible. For instance
- LOAD"MYFILE.DEF", LOAD MYFILE.DEF, LOAD(MYFILE.DEF), are equivalent.
- Also, the ".." used in SOLVE, SUM, etc.. can be replaced by " to ".
- For instance SUM(x,1 to 10) is the same as SUM(x,1..10).
- o The variable PI, and the functions SEC (secant), CSC (cosecant),
- and COT (cotangent) are now built in.
- o The function definition space has been greatly increased, so that
- many more user functions can be defined. Each expression however
- can use a maximum of 33 operators.
- o Due to support for the factorial notation with the "!" symbol,
- the "!=" symbol for "not equal" is no longer supported. "<>"
- should be used instead.
- o So that UCALC can start up a bit faster, UCALC.DEF has been removed.
- Users can create their own UCALC.DEF file, or can modify, and rename
- UCALC.DE back to UCALC.DEF.
- o Several extra features are now reserved for those who register.
-
-
- Bug fixes
- ---------
- o Functions with multiple parameters can be a part of user functions
- without giving an error message.
-
- o UCALC /? no longer changes the screen color attribute.
-
-
- UCALC v1.8 (9-14-93)
- ==========
-
- Features added
- --------------
- o Support for user functions with multiple parameters.
- o Support for implicit multiplication.
- o UCALC.DEF can contain any command.
- o Variable 'last' contains the value of the previous expression
- o Commands to change or remove the "ucalc> " and "Answer: " prompts
- o PRINT, SHELL, LOAD, WRITE (save), CLOSE, EXIT (quick exit),
- LISTF (list user functions) commands.
-
- Changes
- -------
- o FIX controls number of decimal digits rather than total digits.
- o DIG command added to do what FIX used to do.
- o Due to support for implicit multiplication, users should now
- avoid giving a function the same name as a variable.
- o All the features previously reserved only for registered users
- are now available in the shareware evaluation copy.
-
- Bug fixes
- ---------
- o F1 and CLS no longer change color screen attributes.
- o Variables with embedded numeral digits no longer confuse the parser.
- o UCALC.DEF in a different directory no longer causes a problem.
-
-
- UCALC v1.2 (10-25-92)
- ==========
-
- This was the first public release.