Equalizer 1.73 Read Me

About Equalizer

Equalizer is a freeware scientific expression calculator. Instead of the traditional look of many buttons, Equalizer has a simple text line on which you can write the expression in the same way you'd write it on paper (for example: typing "(6*5-12) / 2" will show the answer "9"). In addition, Equalizer is fully skinable - you can completely change its appearance, and even create your own skins.
Equalizer is completely free. You can copy it to anyone, but please contact me if you're going to distribute it in any way.

Equalizer Home Page - For the latest update (you really shouldn't check too often :\ )
Change Log - See what's new.

Installation

The installation of Equalizer is very simple. You just unzip it, and put it any directory you want. It is best to unzip it by right clicking on the file, and choosing "Extract To C:\...\Equalizer\". That way the skins in it will unzip to right place.
Equalizer needs Microsoft's Visual Basic 6 Runtime Dlls. Most new computers have them. If you get an error message when you're trying to run equalizer, you should download and install them.

Hot-Keys

Alt+C - Copy result to cliboard.
Ctrl+Alt+ C - Copy expression and result to cliboard ("1+2+3=6").
Alt+X - Clear the expression line.
Alt+M - Minimize.
Alt+L - Lock\Unlock Position. Press Alt when locked to move it anyway.
Alt+F4 Or Ctrl+Q - Quit.
Alt+G - Show the Graph Window.

Functions and Operators

Operators come between two expressions. Equalizer supports these operators:

X + Y - add: sum of X and Y
X - Y - subtract: difference of X from Y (6-4=2)
X * Y - multiply: X times Y (2*3=6)
X / Y - divide: Y into X (14/4=3.5)
X % Y - percents: X percent out of Y (3%15=20)
X ^ Y - power: X^y (2^3=8)
X div Y - whole Y's in X (10 div 3 = 3)
X mod Y - X in module Y (10 mod 3 = 1)
X t Y - base X root of Y (3 t 8=2)
X e± Y - exponent: X*10^y (3.24e+3 = 3.24*10³ = 3240)

Use a constant in the same way you'd use any number:

pi = π ≈ 3.1415926535897
phi = φ ≈ 1.6180339887498
e ≈ 2.71828182845905 Note: e+ and e- are used for exponents.
x - x is used to draw graphs.

Functions come before or after expressions. Equalizer supports these functions:

tX - Square Root (t9=3)
[x] - Absolute Value ( [4-6] = 2 )
FixX - The whole part of a number ( fix(3.9)= 3, fix(-2.8)= -2 )
IntX - The integer that is smaller than x, or equal to it ( int(1.9)= 1, int(-1.1)= -2 )
RoundX - Nearest integer ( round(1.2)= 1, round(-1.9)= -2)
LogX - Logarithm (Base 10, Log₁₀x)
LnX - Natural Logarithm (Log_ex)

Trigonometry:
Sinα- Sine of the angle
- For All Trigonometry Functions:
- ASinα- Arc (invert) Sine
- SinHα- Hyperbolic Sine
- ASinHα- Arc Hyperbolic Sine
Cosα - Cosine of the angle
Tanα - Tangent of the angle
Cotα - Cotangent of the angle
Secα - Secant
Cscα - Cosecant
*Note: All Trigonomety functions are in Radians
Radα - Convert a degree angle to radians
Degα - Convert a radian angle to degrees

Combinatorics:
X! - Factorial (4! = 1*2*3*4 = 24)
C(n,m) - The number of ways to chose M items from a group of N. (C(4,2)=6)
P(n,m) - The number of ways to chose and order M items from a group of N. (P(4,2)=12)

Statistics:
These functions work on a series of numbers, and must be written with brackets.
Max( X1,X2,X3...) - The maximum number of the series ( max(-5,2,3+1) = 4 )
Min( X1,X2,X3...) - The minimum number of the series ( min(-5,2,3+1) = -5 )
Sum( X1,X2,X3...) - The sum of all number ( sum(-5,2,3+1) = 1 )
Avg( X1,X2,X3...) - The average of all number ( avg(10,2,9) = 7 )

General Behavior

This section explains exactly how Equalizer "understands" your expression. It can help you if you have any problems with it:

First of all, Equalizer removes all spaces from your expression. "123+23/4" is the same as "1 2 3 + 23/ 4".
Second, It replaces all curled brackets { } with normal bracket ( ). "(1+{3-{23+4))}" is the same as "(1+(3-(23+4)))". Note: square brackets [ ] are for absolute value.
It replaces all "--" with a "+". that lazy thing we've talked about, remeber?
Equalizer is smart enough to understand different functions of plus and minus. which was very hard to write, btw It distinguishes, for example, "3^-2" (3^-2) from "3^2-2" (3²-2). Same with all functions and operators.
It understands unknown expressions as zero (I'm still working on that, don't worry). "Hello" will show the solution "0", "3/0" will also show zero.
All trigonometry functions use radians. You can use the "deg" function to use angles of normal people.
For absolute value use [ square bracket ]. Although you'd normally write it with pipes ( |abs value| ), it would be almost impossible for me to understand; so I decided to use [ ].
It may not function very well with extremely large or small numbers.

Nice Multiplication

Equalizer has limited support of nice (implicit) multiplication. However, that is not fully implemented yet. When Equalizer cannot compare an expression to any known function, it looks for a number at the beginning and multiplies it. Some examples:

3e ^ 2 = (3*e)^2 ≠ 3*e^2 = 3*(e^2) . At the beginning Equalizer doesn't know what "3e" means. When you're using implicit multiplication Equalizer sees the short expression as a constant, so it's (3e)^2, not 3*(e^2) as you might think.
3sin4 = 3*sin4
Pie = Pi * e = 8.5397 hmm, pie.
3(2) = ??? - It still doesn't work on brackets.

Again, because that one was important: 3x^2 is actually (3*x)^2, which is 9*x^2. Keep that in mind.

The Graph Window.

Press Alt+G to show the graph window. The grapher is not completed yet but still very useful, so I'm mentioning it. To draw a graph use the constant 'X'. For example you can write Sinx to see the sine graph.
The grapher works pretty fast for me, I don't know how well it would work for you.

Skins

Equalizer is a skinable program. You can change its appearence as you will, and even create your own skins. You can find more skins on my web site
To install a new skin:

UnZip the file.
Create a directory for the new skin. The new directory must be under "Skins" directory, on Equalizer's directory. For example "C: \ Program Files \ Equalizer \ Skins \ Note \".
Copy the files from the zip file to the new directory.
Select the new skin from Equalizer's "Options" screen.

Contact Me

My name is Kobi Lidershnider. You can find updates and more of my programs on my site. If you have any questions, suggestions, comments, or anything else, I'll be happy to hear. Just Mail me.