calculator

Activity 1 : Initiating the calculator

To set the calculator to use the standard course settings, turn it on and enter the following key sequences:

(CLR) (Setup) (Yes)

(SETUP) (Norm)

In the first key sequence, 'CLR' (which is short for 'clear') is the second function that is performed by the key, and 'Setup' is an acronym for the on-screen menu option for this number. "Yes" is the name of the option on screen corresponding to key key. This keystroke clears all previous 'setup' settings of the calculator.

in the next key sequence "SETUP" is the name of the second function of key 2. key and 'Norm' (short for "normal") is the on-screen menu option that corresponds to key 2. function of the key. By pressing the key, it allows you to select 'Normal 2 mode'. This will be explained in greater detail in the section 5.

It is important to note the distinction between 'SETUP', the other function that is available with the key and the menu item "Setup".

Your calculator is now working in Math mode with the words Math will appear on the right-hand center of the calculator display, as shown in Figure 4 below. Mathematics mode is the most recommended mode to use your calculator throughout this course since it permits mathematics to be entered and displayed in a similar manner to the way you write it on paper.Figure 4 'Math' mode

1.1 Basic calculations

Basic calculations are input through the calculator in exactly the same way as they were written on paper, as shown in the following activity. The calculator will display the calculation that you enter. When you press the Enter button, the result is displayed in the lower right corner of the screen.

Activity 2 Sums, variations products, and quotients

Use your calculator to figure out the solutions to the following calculations.

The answer is revealed

It is possible that in part (4) in the above task in the above activity, there was a problem with the calculation was too long to be displayed on the calculator display. In these situations, the symbols ' ' or ' ' appear at the left and right sides of the display , indicating that there's more data in the direction of. This information is accessible by scrolling to the left or right using buttons and keys that are located on the right and left sides of the large cursor control button (labelled by the word 'REPLAY') located under the calculator screen.

If you type a very lengthy calculation inside your calculator it is possible to be able to see the cursor (which is usually displayed by the letters ' ') change to ' '. This means you're permitted to type at most 10 more characters. If you experience this issue then you must break the calculation into smaller portions.

The cursor can be a blinking symbol that indicates what the next input to the calculator will show up.

1.2 Decimals or fractions?

Within Activity 1 you set up your calculator to operate in Math mode. In this mode, when the outcome of an calculation is not a complete number, it is shown as a fraction for example when it is feasible.

For the answer to be displayed in decimal form, press be pressing instead of pressing, or you could switch between decimal and fractional outputs by pressing the button.

Keep in mind that your calculator will be in Math mode if Math is displayed at the top of the calculator display. If your calculator isn't using Math mode, follow the steps from Activity 1.

Activity 3 Fractions and Decimals

Utilize your calculator to find answers in fractional and decimal forms.Reveal your answer

1.3 Powers

There are numerous keys on the calculator that let users to carry out calculations with power. For smaller powers like cubes and squares, there are designated buttons in addition to keys that are placed in the function area of the keypad. They are used similarly to writing mathematics by pressing the keys to enter, you would enter by pressing . The display will also show the math in the exact way as you would write it out on paper.

For higher power calculations, for example the. to make use of the more general power key . It is used again in a natural fashion. In order to enter the key, you will need your keystroke . Note that after you press the key the small square box appears visible in the calculator display, which displays the flashing cursor (' ') that allows you to enter the power into the correct place. If you want to drag the cursor off of this box and to return to the main line of the display after the power has been entered you need to press the right arrow key on the right end of the larger cursor control button.Figure 5 shows the general power button function

Different models of calculator may include a button instead of and may not have specific and keys.

Activity 4 Calculating power

Calculate each of these using your calculator.

Answer the question

1.4 Making corrections

If you've made an error in entering a keystroke in the calculator then you may use the editing options to rectify your error.

This buttons and keyboards on the control for the cursor permit you to move the cursor (shown in the display as ' ') within a calculation displayed on the calculator screen. Characters can then be added into the location of the cursor by pressing the appropriate buttons, and objects to the left of the cursor's location can be deleted by pressing keys. key. This can be accomplished before it or once when the key has been activated. To review an altered calculation, simply press on any time.

In some situations, however, it may be best to simply delete what you've typed and begin over, pressing the "all clear" key!

If a grave error is made when entering the calculation into the calculator, it may prevent the calculation of the answer at any time, because the calculation could not make mathematical sense. In this case, a 'Syntax Error' will be displayed as illustrated in Figure 6. The Syntax Error screen gives you two options:

• Use the button to end the calculation and clear the screen.
• Use the button to the button to either instead of to go back to the erroneous calculation using the editing cursor placed in the area of error, and ready for corrections to be done.

Figure 6 Syntax Error

Other kinds of calculator errors you might come across include:

• "Math Error", if the calculation you have entered is mathematically sound, but the result is not able to be calculated. For instance, attempting subtracting zero, or when the result is too large for the calculator to manage.
• 'Stack Error"', which indicates that your calculation is too complicated for one go . In such situations, try breaking the calculation into several smaller ones.

Section 4 outlines how you can do this.

In these instances in these situations, the calculator will show an identical screen to the one in the Syntax Error, allowing you to either abandon or change your calculation.