PSP Sci Calculator - Based on jCalc98 Code from calculator.ORG
Sony Logo is only ilustrative. This skin was not made by Sony.

HELP :

As you would expect, you use the calculator just as you would a real pocket calculator. Space is at a premium, so many of the calculator buttons have to double up the functions they provide. The layout of the calculator in its normal state has the functions you would expect to see on a fairly standard scientific calculator, which means that it is probably self-explanatory. Notice the shift button in the top left-hand corner.

To enter a number in exponential format, enter the mantissa, followed by the EXP key, then the exponent. To use the arithmetic functions, click their buttons. If the function is unary (i.e. acts on one number, e.g. 1/x) the display is updated to the result. If the function is binary (e.g. +, -, X etc.) enter the second number and click = or another arithmetic key.

The functions of the buttons in their shifted state are not marked on the calculator body, but the buttons change when you press the shift button. If you press the shift button again, the buttons revert to their un-shifted state.

## AC - All Clear

Clears the calculator, and resets any functions. The contents of the memory are not affected by AC. The memory can be cleared after pressing AC by pressing Min.

## C - Clear

The C button erases the last number or operation entered.

## + - Addition

The + button performs addition.

## - - Minus

The - button performs subtraction.

## / - Divide

The / button performs division.

## X - Multiply

The X button performs multiplication.

## = - Equals

The = button displays the result of an arithmetic operation. It can be used during a calculation to ensure that an intermediate result has been evaluated. Unless the = button is pressed, it is possible that an operation is incomplete - pressing = ensures that no arithmetic operations are pending.

## % - Percent key

The % button (shifted = or Enter button) displays the result of an arithmetic operation as a percentage.

Example:
Calculate five sixteenths as a percentage.

5 / 1 6 shift %
Result: 31.25%

## pi - Pi key

The pi button (shifted Exp button) displays the value of pi (the ratio of the circumference of a circle to its diameter).

## M+ - Memory Plus

Pressing the mplus button adds the number displayed to the contents of the memory.

## Min - Memory Input

Press the min button to enter the currently displayed number into the memory. The memory can be cleared after pressing AC and then pressing Min.

## MR - Memory Recall

Pressing the MR button brings the contents of the memory into the display.

## EXP - Exponent

Use the EXP button to enter a number in exponential form.

Example:
To enter the number 1.234 x 10^6 (1.234E6) press the following buttons:

1 . 2 3 4 EXP 6

## shift - Shift

Use the shift to access additional functions. The functions available are indicated by changes to the legends on the calculator buttons.

## Errors

If you get an error, the calculator display will contain an appropriate message, and possibly some further descriptive information. In the case of certain errors, the calculator functions are disabled and you need to press the AC button to clear the error.

## 1/x - Reciprocal

The 1/x button computes the reciprocal of the number currently displayed.

## 2/x - Square Root

This button computes the square root of the number currently displayed.

## x2 - Square

The x2 button computes the square of the number currently displayed.

## log - Logarithm to base 10

The log button computes the logarithm to base 10 of the number currently displayed.

## ln - Natural Logarithm

The ln button computes the natural logarithm (logarithm to base e) of the number currently displayed.

## xa - X to the Power of a

The xa button computes X to the power of a.

Example:
Calculate 5 raised to the power of 6.

5 xa 6 =
Result: 15625.

## x1/a - ath Root of X

The x1/a button computes the ath root of X (i.e. X to the power of the reciprocal of a).

Example:
Calculate the cube root of two:

2 x1/a 3 =
Result: 1.259921004989

## rand - Random Number

The rand button is used to generate a pseudo-random number between 0 and 1.

## hyp - Hyperbolic

The hyp button is used to select hyperbolic functions and inverse hyperbolic functions. Clicking the hyp button causes the legends of the sin, cos and tan to change to sinh, cosh and tanh.

Pressing shift either before or after the hyp causes the inverse hyperbolic functions to be displayed: invsinh, invcosh and invtanh.

Example:
Compute the hyperbolic sin of 1.0

1 hyp sinh
Result: 1.175201193643801

## sin - Sine

The sin button computes the sine of an angle.

## asin - Inverse Sine

The asin button computes the angle for which the sine is the value entered.

## cos - Cosine

The cos button computes the cosine of an angle.

## acos - Inverse Cosine

The acos button computes the angle for which the cosine is the value entered.

## tan - Tangent

The tan button computes the tangent of an angle.

## atan - Inverse Tangent

The atan button computes the angle for which the tangent is the value entered.

## x! - Factorial

The factorial button computes the factorial of an integer number. If the current number displayed is not an integer, an error message is produced.

## 10x - Inverse Logarithm

The 10x button computes 10 raised to the power of the current number, giving the inverse logarithm.

## ex - Inverse Natural Logarithm

The ex button computes the value of e raised to the power of the current number (exponential function or inverse of natural logarithm).

## +/- - Sign

The sign button changes the sign of the number currently displayed.

## < - Backspace

Use the < button to remove the most recently entered numbers, digit by digit.

To remove the whole of an entry, use C (Clear entry).

## ( - Left Parentheses

The ( and ) buttons are used to enforce the order of evaluation of an expression. For example, the expression 1 + 2 X 3 would be evaluated as 7.

To force the calculator to evaluate a particular expression first, use parentheses (brackets). For example, evaluating (1 + 2) X 3 gives the result 9.

## ) - Right Parenthesis

Closes a level of parentheses.