calculator

Step 1: Initialising the calculator

To set the calculator to its default settings for courses, turn on the calculator and then enter two key sequences:

(CLR) (Setup) (Yes)

(SETUP) (Norm)

It is important to note that in the initial key sequence, "CLR" (which is an abbreviation for 'clear')') is the second purpose that is performed by the key and 'Setup' is an acronym for the on-screen menu option that corresponds to that keys. "Yes" is the name of the menu item on screen that corresponds to key keys. This key sequence erases any previous settings for'setup' in the calculator.

The second sequence of keys "SETUP" is the name of the second function that is available to key 2. key, and "Norm" (short for "normal") is the on-screen menu option that corresponds to key 2. button. By pressing the key, it will enable the 'Normal 2 mode', which will be explained in greater detail in the section 5.

Notice the distinction between 'SETUP', which is the secondary function for the key and the menu choice "Setup".

Your calculator is now operating in Math mode as well as the term Math will appear on the right-hand upper part of your calculator display, as illustrated in Figure 4 below. The Math Mode is the preferred method of using your calculator in this class because it permits mathematics to be input and displayed in a similar manner to how you would write it down on paper.Figure 4 Math mode

1.1 Basic calculations

The most basic calculations are input in the calculator in the exact way as they were written on paper, as shown in the next activity. The calculator will display the calculation you typed in. When you click the button, the answer will be displayed on the bottom right corner of the screen.

Activity 2 Sums, distinctions, products, and products and

Make use of your calculator to calculate the results of the following calculations.

Find the answer

You might have noticed that in the fourth part (4) in the previous exercise in the above activity, it was apparent that the calculation was too large to fit on the calculator display. In this case the symbols ' "'" or " ' ' are displayed to the right or left of the screen to indicate that there is more information available in the direction of. The information is visible by scrolling left or right with keys keys. keys located on the right and left side of the large control button for cursors (labelled by the word 'REPLAY') located under the calculator screen.

If you enter a lengthy calculation in your calculator and you notice the cursor (which typically appears in the form of ' ') change to ' '. This means that you're permitted to enter 10 characters more. If you are confronted with this it is recommended to break your calculation into smaller pieces.

The cursor flashes as a symbol that indicates where the next entry in the calculator will be displayed.

1.2 Decimals or fractions?

Then, in Activity 1 you set up your calculator to work in Math mode. In this mode, if the outcome of an calculation is not a complete number, it is presented as a fraction like whenever it is possible.

To get the answer in decimal format, you have use the key instead of pressing, or you can switch between decimal and fractional outputs by pressing key button.

Make sure that the calculator will be in Math mode if the word Math appears at the upper right of your calculator display. If your calculator isn't operating in Math mode, follow the steps from Activity 1.

Activity 3 Fractions and Decimals

Make use of your calculator to determine the answer in both decimal and fractional forms.Reveal the answer

1.3 Powers

There are a variety of keypads on the calculator that allow users to carry out calculations that require power. For smaller powers like cubes or squares, there are specific buttons as well keys that are found in the function key part of the keypad. They function similarly to the way you write math such as to enter a number, you hit . The display will also show the math in the same manner as you write it down on paper.

To calculate higher power like the. to use the general power keys . It is used again in a natural manner. For entering the power, you must use keys . After pressing the key the small square box appears displayed in the calculator display, which displays the flashing cursor (' ') that allows users to input the key into the right place. For the ability to move your cursor out of this box, and then back to the main display line after the power has been entered by pressing the right arrow key located on the right left-hand side of the cursor's control button.Figure 5: The general power key's function

Different models of calculator might have a button instead of and might not come with particular keys keys. keys.

Activity 4 Calculating power

Calculate each of the following with your calculator.

Find the answer

1.4 Making corrections

If you've made an error when entering a key sequence in the calculator You can utilize editing tools to fix the error.

Keys keys on the large cursor control button. The buttons on the control button for cursors allow you to move the cursor (shown in the display in the form of ' ') within the calculation in the calculator screen. The characters can be placed into the location of the cursor using the buttons, and the items on the left of the cursor may be removed using keys. button. It can be done prior to and after when the key is hit. To review an altered calculation you can press anytime at any point.

In certain situations in certain situations, it might be best to simply delete what you've written and begin over, pressing the "all clear" button!

If a serious error occurs when entering the calculation in the calculator this could result in the calculation of the answer at any point, since the calculation might not be mathematically logical. In this case, a 'Syntax Error' screen will appear as illustrated in Figure 6. The screen for Syntax Error gives two options to you:

• Click to stop the calculation and remove the screen.
• Press or either to go back to the incorrect calculation using the editing cursor positioned at the location of error, and ready for corrections to be done.

Figure 6 Syntax Error

Other kinds of calculator errors that you could come across include:

• "Math Error" occurs when the calculation you have entered is mathematically sound, but the result is not able to be calculated, for instance, trying division by zero, or when the outcome is too big to the calculator to process.
• "Stack Error", if you're calculation is too complicated to be completed in one go . In such situations, try breaking the calculation into several smaller ones.

Section 4 discusses ways you could go about this.

In these situations in these situations, the calculator will show the same screen as is displayed for Syntax Error, allowing you to either change or abandon the calculation.