Calculator Help

Number Entry

The number keys 0 to 9 and decimal point key are used to enter numbers. To enter a negative number, press ⁺/_- after entering the number.

The DEL key deletes the last digit entered and can be used to correct a number or exponent.

The C key clears the display ready for a new calculation.

Exponents

To enter a number with an exponent, press EXP then enter the exponent using the number and ⁺/_- keys.

Memory

The memory has three function keys.

MS stores the current display value.

MR recalls the value stored in memory to the display.

M+ adds the current display value to the memory.

The colour of MS changes to indicate that memory has a stored value and reverts to the original colour when MS value is cleared to zero.

Arithmetic Calculations

Arithmetic calculations are as shown below:

Percentage Calculations

Percentage calculations are as shown below:

Adds 5% to the display value

Reduces display value by 10%

Returns 15% of value to the display

Returns the value of the division as a percentage

Functions

Square Root

Returns the sqrt. of value to the display

Square

Returns the value squared of value to the display

Reciprocal

Returns the reciprocal of value to the display

PI

Returns the value of PI to the display

Random Numbers

The RND key generates random numbers in two modes

With value 0 displayed the RND generates a random decimal between 0 and 1 inclusive.

With an integer [N] displayed, the RND generates a random integer between 0 and [N] inclusive.

In both cases if the original displayed value is not an integer it will be rounded to the closest integer before the random number is generated.

Screen and Key Controls

Key Controls

Voice announcement off

Voice announcement on

Button click is off

Button click is on

Vibrate is off

Vibrate is on

Screen Control

Screen will blank automatically

Screen stays alive while calculator is active