|  |  | The area where you can enter the Calculator + ƒ formulas. This space will also display the result of the valculation after pressing the Enter key. | 
|  |  | This button changes Calculator + ƒ mode for decimal numbers. | 
|  | This button changes Calculator + ƒ mode results for binary numbers. Binary numbers can be prefixed with the character # code> before.
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|  | This button changes Calculator + ƒ mode results for hexadecimal numbers. Hexadecimal numbers can be prefixed with the character # code> before.
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|  | With this button you can switch between 8 -, 16 - and 32-bit resolution or unsigned for binary and hexadecimal numbers. This affects the output results and the interpretation of binary numbers. | 
|  | Changes the mode for angle calculations to 360 °. | 
|  | Changes the mode for angle calculations to radians. | 
|  | Changes the mode for angle calculations to Gon. | 
|  | Switches between normal representation (180 ..) and scientific (1.8 E + ). If you are faced with a very large number, you must enable scientific way, if not, you can cause inaccuracies in the result. | 
|  | This button opens the extension drawer of Calculator + ƒ. This drawer incorporates functions, user-defined functions, binary functions and calculation log. | 
|  |     | Opening and closing brackets. Calculator + ƒ supports unlimited nesting of brackets. | 
|  | The semicolon is used as a delimiter for functions with several parameters. | 
|  | Returns the unsigned value of a number. | 
|  | PI constant with high accuracy. | 
|       | Power operator. Examples: 3^3 = 27,7^2 = 49,2^8 = 256 | 
|  | Square root. | 
|  | Root function. root(x; y)corresponds to the inverse functionx^(1/y)Ejemplo:root(27; 3) = 3 | 
|  | Note for all trigonometric functions the mode setting to calculate angles. | 
|  | Sine function. | 
|  | Cosine function. | 
|  | Tangent function. | 
|  | Arcsine function. | 
|  | Arccosine function. | 
|  | Arctangent function. | 
|  | e is the Euler number. | 
|  | Logarithm base e. | 
|  | Natural logarithm. | 
|  | Percentage delta. | 
|  |  | Delete the entry area. | 
|  | Percent. | 
|  | Addition. | 
|  | Subtraction. | 
|  | Multiplication. | 
|  | Division. | 
|  | Returns the result of the formula. | 
|                       | Input keys for numbers. | 
|  |  | Displays the standard functions in the extension drawer. (more) | 
|  | Displays the custom functions in the extension drawer. (more) | 
|  | Displays the binary functions in the extension drawer. (more) | 
|  | Displays the log in the extension drawer. | 
|  |  | deg(x)converts the number of the specified mode for trigonometric functions in current mode for trigonometric functions. | 
|  | rad(x)converts the number of the specified mode for trigonometric functions in current mode for trigonometric functions. | 
|  | grd(x)converts the number of the specified mode for trigonometric functions in current mode for trigonometric functions. | 
|  | Note for all trigonometric functions the mode setting to calculate angles. | 
|  | Hyperbolic sine. | 
|  | Hyperbolic cosine. | 
|  | Hyperbolic tangent. | 
|  | Inverse hyperbolic sine. | 
|  | Inverse hyperbolic cosine. | 
|  | Inverse hyperbolic tangent. | 
|  | fac(x)displays the factorial of thexnumber. | 
|  | int(xy)shows the integer part ofx. | 
|  | floor(x,y)roundsxtoydecimal places. Always rounded up. | 
|  | ceil(x,y)roundsxtoydecimal places. Always rounded up.
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|  | round(x,y)roundsxtoydecimal places. Always rounded up. | 
|  | Determines the sign of a number. Returns 1 code> if the number is positive, returns -1 code> if the number is negative, returns 0 if the number is 0.
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|  | Returns the smallest argument from a list of arguments. | 
|  | Returns the biggest argument from a list of arguments. | 
|  | rnd(x)returns a random integer between 1 andx. |