calculator

Activity 1 : Initiating the calculator

To initialise the calculato rto your default course settings, turn on the calculator and then enter the following two key sequences:

(CLR) (Setup) (Yes)

(SETUP) (Norm)

Be aware that in the second key sequence, 'CLR' (which is an abbreviation for 'clear')') is the second purpose in the key and 'Setup' one of the names of the on-screen menu option corresponding to the keys. "Yes" is the name of the on-screen menu option which corresponds to this key. This key sequence clears any previous settings for'setup' to the calculator.

In the second key sequence 'SETUP' is the name of the second purpose of the key and 'Norm' (short for "normal") is the on-screen menu that matches the button. The key press switches to "Normal 2 mode'. This will be explained in greater detail in section 5.

Take note of the differences between 'SETUP' the other function that is available with the key as well as the menu selection 'Setup'.

Your calculator will now function in Math mode with the words Math will be displayed near the right-hand side of the upper part of your calculator display as shown in Figure 4 below. Math mode is the ideal method of using your calculator throughout this course since 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

Basis calculation sare entered to the calculator in exactly the same sequence as when they are written on paper, as shown in the next exercise. The calculator displays the calculation you input. When you press , the answer will be displayed on the bottom right hand corner of the screen.

Activity 2 Sums, variations, products, and Quotients

Use your calculator to find how to answer the following calculations.

Find the answer

You might have noticed in the first part (4) of the above activity in the above activity, the calculation was too long to fit on the calculator display. In these situations the symbols ' or ' "'" appear to the left and right sides of the display , indicating that there is more information available in this direction. This information can be seen by scrolling left and right using the and keys located on the left and right sides of the large cursor control button (labelled with the words 'REPLAY') located under the calculator screen.

If you type a very lengthy calculation into your calculator or calculator, you might be able to see the cursor (which is typically shown in the form of ' ') change to ' '. This means that you're permitted to enter 10 characters. If you experience this issue you need to break down your calculation into smaller parts.

The cursor can be a blinking symbol that indicates where the next item entered inside the calculator will show up.

1.2 Decimals or fractions?

When you are in Activity 1 you set up your calculator to use Math mode. When in this mode the outcome of an calculation is not a whole number, it is shown as a fraction like the case where it is possible.

To see the answer in decimal format, you have to press instead of pressing, or you can switch between the decimal and fractional outputs using the keys.

Remember, it is a good idea to ensure that your calculator should be operating in Math mode if the word Math is displayed at the upper right of your calculator display. If your calculator isn't in Math mode, follow the steps of Activity 1.

Activity 3 Fractions, decimals and decimals

Use your calculator to calculate both fractional and decimal forms.Reveal the solution

1.3 Powers

There are various keyboards in the calculator that enable users to carry out calculations involving powers. For small powers such as cubes and squares, there are special buttons as well , which are situated in the function in the keypad. These buttons are utilized similarly to the way you write math; for example, to enter a number, the number you have to click . The display will also show mathematics in the same the way that you write it down on paper.

To calculate higher power such as , you'll need to use the general function key . This is again used in a natural manner. When you want to access it, you need to use keys . After pressing the key the small square box appears displayed in the calculator display with a flashing cursor (' ') that allows one to put the power in the correct place. If you want to drag the cursor off of this box and return to the main display after the power has been entered using the right arrow key located on the right end of the larger cursor control button.Figure 5 The general power key's function

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

Activity 4 Calculating powers

Calculate each of the following with your calculator.

The answer is revealed

1.4 Making corrections

If you make an error in entering a key sequence in the calculator then you may use editing tools to fix the error.

And the buttons and keyboards on the cursor control button enable you to move the cursor (shown on the display in the form of ' ') within the calculation displayed on the calculator screen. It is then possible to insert characters into the location of the cursor with a press of the right buttons, and the items on the left of the cursor may be removed using keys. keyboard. This can be done either ahead of, or following when the key is clicked. To review an altered calculation you can press whenever you want to. time.

In certain circumstances, however, it may be best to simply delete what you've written and begin from scratch, by pressing the 'all clear' keys!

If a major error occurs when entering the calculation in the calculator, it may prevent calculation of the result at all, as the calculation may not be mathematically logical. If this happens, a 'Syntax Error' message will be displayed as illustrated in Figure 6. The Syntax Error screen will give two options to you:

  • Then press to stop the calculation and remove the screen.
  • You can press either the button to either to return to the erroneous calculation using the editing cursor placed at the point of error, and waiting for a correction to be done.

Figure 6 Syntax Error

Other types of calculator error that you could be faced with include:

  • 'Math Error', when the calculation you have entered is mathematically sound, but the result is not able to be calculated, for instance, attempting to divide by zero or if the calculation is too big to the calculator to process.
  • "Stack Error', when the calculation is too complex to be handled in one go - in such situations, try breaking the calculation into a series of simpler ones.

Section 4 discusses ways you could go about this.

In these cases in these situations, the calculator will display the same display as to the Syntax Error, allowing you to either abandon or correct your calculation.


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  • so this is it for today's  blog 


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