Fractions

/ To enter a fraction of the form 3/4. Click a number and then click fraction bar, then click another number.

↔ You can use fraction space button to create a number of the form 5 3/4. Enter a number, then click fraction space, click another number and then click on the fraction bar button, lastly enter another number.

DEC FRA Decimal format button and Fraction format button work as pair. When you choose the one the other is switched off. Decimal format button is used for all decimal work. Also to change a fraction of the form 3/4 to the decimal 0.75, or a fraction of the form 7/4 or a mixed number of the form 1 3/4 to the decimal 1.75. Click on the decimal format button, enter a fraction or mixed number, then click equals. If the fraction or mixed number is only part of the calculation then omit clicking equals and continue with the calculation per usual. i.e. 3/4 DEC x 6 =. Fraction format button is used to work with all fractions. Also to change a decimal of the form 0.5 to the fraction 1/2, or change a decimal of the form 1.75 to a mixed number of the form 1 3/4 or to the fraction 7/4, or a fraction of the form 7/4 to the mixed number 1 3/4. Click the fraction format button, enter a decimal, click equals and then click on a fraction form and then click equals. If the fraction of decimal is part of a calculation, omit clicking equals and continue with the calculation.

^b/c ^a+b/c Proper fraction button and Improper fraction button work as pair. When you choose the one the other is switched off.
Proper fraction button is used to change a number of the form of 9/5 to the form of 1 4/5. A proper fraction is a fraction where the numerator (top number) is less than the denominator (bottom number).
Improper fraction button is used to change a number of the form of 1 4/5 to the form of 9/5. An improper fraction is a fraction where the numerator (top number is greater than or equal to the denominator (bottom number).

Views

You can use the view menu button to add fuctionality to the standard calculator.
You can add a scientific keypad to calculate logarithms, a trigonometric keypad to calculate angles, and a fraction keypad to form, add, subtract, divide, and multiply fractions.
You can also choose to hide the tape.

Constants

Constants You can use the constants menu button to choose between most common constants, atomic and nuclear constants, electromagnetic constants, physico-chemical constants, universal constants, and x-ray constants.

Scientific

x² X^2 is the square of a number or a number times itself. Enter a number, then click x^2.

x! X! is x factorial. X is a whole number greater than 0. A number in the form 4! is 4x3x2x1 or 24. Enter a number, then click x!

¹/x 1/x is the reciprocal of a number and x cannot be zero. Enter a number of the form 0.2 and get 5. Enter a number, then click 1/x.

x⇄y This button is used to inverse x and y.

BASE Base operation is used to set a number as base (i.e. decimal or hexadecimal system). Enter a number, then click base.

MOD The modulo operation finds the remainder after division of one number by another. The expression "5 mod 2" would evaluate to 1, because 5 divided by 2 leaves a quotient of 2 and a remainder of 1. Enter a number, then click on MOD, then enter another number, then click equals.

log Log is the logarithm (exponent) on base 10 of a number. The log of a number of 45 is log 45 and equals 1.653212. Enter a number, then click on Log.

ln

In is natural log or the logarithm (exponent) on base e of a number. The In of a number of 45 is In 45 and equals 3.806662. Enter a number, then click on In.

lg2 Lg2 is the logarithm (exponent) on base 2 of a number. The log of the number 45 base 2 is lg2 45 and equals 5.49185. Enter a number, then click on Lg2.

lg_y^x Lgy^x you can use this to raise a logarithm to higher power.

y^x Y^x you can use this to raise a number to higher power. Enter a number, then click y^x, then enter another number.

^x

√ y

You can use the x-root-of-y button to find any root of a number. Enter a number (y), then click x-root-of-y button, then enter another number (x), and then click equals.

10^x 10^x is 10 raised to the x power (exponent). A number in the form of 10^4 is 10000. Enter a number (exponent), then click 10^x.

e^x e^x is e raised to the x power (exponent). A number in the form e^4 is 54.5982. Enter a number (exponent), then click e^x.

2^x 2^x is 2 raised to the x power (exponent). A number in the form 2^4 is 16. Enter a number, then click 2^x.

e The number e is an important mathematical constant that is the base of the natural logarithm. It is approximately equal to 2.71828.

π The number pi is a mathematical constant, the ratio of a circle's circumference to its diameter, approximated as 3.14159.

φ Phi represents the golden ratio, two quantities are in a golden ratio if their ratio is the same as the ratio of their sum to the larger of the two quantities. It is approximately 1.61803.

SN You can use the scientific notation button to handle very large numbers, this system makes use of "powers of 10", raising 10 to whatever value you need. You can get either really big numbers by using positive powers like 10^5=100000. Or you can get really small numbers by using negative powers like 10^-5=0.00001. e stands for exponent and is used to represent "times 10 raised to the power of" (x 10^n). For example, if you want the number 100000000 as a scientific notation, you enter 10, then click SN, then 7, and then equals (10eX10^7=100000000).

( ) You can use the parentheses pair to group terms. Every parenthesis you open is numbered, parenthesis levels are indicated by a number in the display box next to the parentheses buttons. This way you can easily know how deep in a parenthesis you are, when the expression is complete there are no parenthses left in the display box. This is used for groupings of the form 4+(9x(15-7)+6). Click the open parenthsis button, enter terms, then click the close parenthesis button.

Trigonometric

GRAD RAD DEG You can choose between Gradian, Radian, and Degree unit modes, when you choose one the others are switched off.
The gradian (also known as gon) is a unit of plane angle. 1 grad = 1/400 tr = pi/200 rad = 9/10 deg.
The radian is the standard unit of angular measure. 1 rad = 1/2pi tr = approx. 57.296 deg = approx. 63.662 grad.
The degree is a unit of measurement of plane angle. 1 deg = 1/360 tr = pi/180 rad = 10/9 grad.

sin Sine finds the ratio y/r value of an angle. Enter a number, then click sin.

cos Cosine finds the ratio x/r value of an angle. Enter a number, then click cos.

tan Tangent finds the ratio y/x value of an angle. Enter a number, then click tan.

sinh Sinh is the hyperbolic sine or sinh value of an angle. Enter a number, then click sinh.

cosh Cosh is the hyperbolic cosine or cosh value of an angle. Enter a number, then click cosh.

tanh Tanh is the hyperbolilc tangent or tanh value of an angle. Enter a number, then click tanh.

asin Asin is arcsine or sin^(-1). It finds the angle between -90 degrees and 90 degrees inclusive or between -pi/2 and pi/2 inclusive, with this sine value. Enter a number, then click asin.

acos Acos is arccosine or cos^(-1). It finds the angle between 0 degrees and 180 degrees inclusive or between 0 and pi inclusive, with this cosine value. Enter a number, then click acos.

atan Atan is arctangent or tan^(-1). It finds the angle between -90 degrees and 90 degrees inclusive or between -pi/2 and pi/2 inclusive, with this tangent value. Enter a number, then click atan.

ash Ash is arc hyperbolic sine, arcsinh or sinh^(-1). It finds the angle with this sh or sinh value. Enter a number, then click ash.

ach Ach is arc hyperbolic cosine, arccosh or cosh^(-1). It finds the angle with this ch or cosh value. Enter a number, then click ach.

ath Ath is arc hyperbolic tangent, arctanh or tanh^(-1). It finds the angle with this th or tanh value. Enter a number, then click ath.