Basic math calculator how to#

In this notation, (OFF) is not a key that you press, but is the name of the second function of the key, which is accessed with the key. For example, to turn off the calculator, press (OFF). Names in brackets are thus not keys that you press but simply describe the function that is accessed using the previous key sequence. If the key sequence accesses the second function of a key, or a function from a menu, the name of this function will be given in brackets at the appropriate point in the key sequence.

$basic math calculator$

Basic math calculator how to#

When describing how to use various calculator functions, this guide gives the exact keys that you need to press using the symbols shown on the keys. Figure 3 A typical calculator on-screen menu Last line of text is 7 : Sci space 8 : Norm. Third line of text is 5 : Gra space 6 : Fix. Second line of text is 3 : Deg space 4 : Rad. First line of text is 1 : M t h I O (written as one word) space 2 : Line I O (written as one word). The top row of the screen contains a downward pointing arrowhead towards the right end. The figure shows the display on a calculator screen containing four lines of text. You will learn how to use the calculator memories later in section 4. When the button is pressed, the symbol ‘ ’ is shown at the top of the calculator display. These functions allow numerical values stored in the calculator memories to be used within calculations and are accessed by pressing the button before the appropriate key. Some keys also have a third function, printed above the key in red. It disappears when you press another key. When you press the button, the symbol ‘ ’ appears at the top left-hand corner of the calculator display to remind you that the button has been pressed. The second function of the key is printed in yellow above the key, and is accessed by pressing the button before pressing the key. The main function of a key is printed in white on the key itself. Many keys on the calculator have more than one use. The keys used to insert brackets into a calculation are in the centre of the row above the number keys. The lower half of the keypad contains the number keys, keys for the basic operations of addition, subtraction, division and multiplication, and the key, which is pressed when you want the calculator to display the result of the calculation you have entered. The bottom row has the mathematical text 3 at the right-hand side, annotated with ‘output’. The middle row of the screen has the mathematical text 1 add 2 at the left-hand side, annotated with ‘input’. The top row of the screen contains the letter D (white text on black) in the centre, and the word ‘math’ with an upward pointing arrowhead towards the right end, and these are annotated with ‘display indicators’. The figure shows the display on a calculator screen with annotations added to explain some of the features. Below these the button labelled Ans is annotated with ‘last answer key’ and the button labelled = is annotated with ‘equals key’. Below these the multiply, divide, add, subtract keys are annotated with ‘basic operation keys’. To the right of these the red button labelled D E L (written as one word) is annotated with ‘delete key’ and the red button labelled A C (written as one word) is annotated with ‘all clear key’.

At the bottom left of the calculator an array of twelve buttons is annotated with ‘number keys’. Below these are four rows of black buttons (twenty two buttons in total) with the annotation ‘function keys’. Beneath the display is a row of five blue buttons annotated, from left to right: ‘shift key’ ‘alpha key’ ‘cursor control button’ (this button is much larger and in the centre) ‘mode key’ ‘on key’. The bottom row has the mathematical text 3 square root 6 at the right-hand side. The middle row of the screen has the mathematical text square root 12 multiplied by square root 6 multiplied by square root 3 all over 2 at the left-hand side. The top row of the screen contains the letter D (white text on black) in the centre, and the word ‘math’ with an upward pointing arrowhead towards the right end. The calculator screen at the top, annotated with ‘display’, has three rows. The figure shows a photograph of a Casio scientific calculator f x - 83 E S (natural display) with annotations added to explain some of the features.