TECHNICAL WRITING - Calculator

                                                  CALCULATOR

A calculator is an electronic device used for calculating the output ny giving input of two or more oprands and the function that is to be performed on these oprands.The function to be performd on these oprands is called a operation.A calculator consistsof vaious components .


1. Solar Panel: This calculator needs no batteries because it has a solar panel on the top right-hand corner of the face.  The calculator must be used with enough light  to show up on the display.
for the numbers
1. Solar Panel: This calculator needs no batteries because it has a solar panel on the top right-hand corner of the face.  The calculator must be used with enough light for the numbers to show up on the display.

3. ON/C BUTTON:  The ON/C button turns the calculator on.

The C in ON/C means “clear”.  ON/C also clears the display screen.

5. CALCULATION BUTTONS: Once a number is displayed on the screen, the calculation buttons may be used to divide, multiply, subtract, or add another number, entered after the calculation button is pushed.

6. EQUALS (=): The equal button finishes the calculation and displays the final answer.

7. POSITIVE/NEGATIVE: (+ ↔ -): This will allow the user to create negative numbers; numbers less than zero.  First the number must be entered, and then the button pushed.  A negative sign will appear on the left of the screen when the calculator is displaying a negative number.

8. SQUARE ROOT (√): This button will help find the square root of any positive eight-digit number.  It works similarly to the (+ ↔-) above in that the number is entered before the square root button is pressed.  If a negative number is displayed, using the square root button will give an error or E on the left of the screen because there is no real negative square root.

9. PERCENT (%): The percent button is to help with percentage problems.  Most problems can be typed into the calculator as one would say them.  To find 500% of 20, one would enter (20)(X)(500)(%) or to find what 100 minus eight percent is, one would enter (100)(-)(8)(%).  The answer automatically displays, so no equals sign is needed.

10. MEMORY BUTTONS (M+, MRC, M-):  The memory buttons Add to Memory (M+), Memory Recall (MRC), and Remove from Memory (M-) allow the user to store a specific number and recall it without needing to type it in again.  To add a number to memory, type the number and hit M+.  To use the number stored, press ON/C to clear the calculator, set up the calculation and hit MRC when the number in memory is needed.  To remove a number from memory, make sure the number in memory is displayed by pressing MRC and hit M-.

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