Sharp EL-738 Guía de inicio rápido

Chapter 1

Notes on the SHARP EL-738

calculator

General

The SHARP EL-738 calculator is recommended for this module. The advantage of this cal-

culator is that it can do basic calculations, ﬁnancial calculations and statistical calculations.

Most of the keys can perform two functions.

To perform a function written on the key, you simply press the key. To perform a function

written on the surface just above the key, ﬁrst press the orange 2ndF key to activate it to

perform the function when pressed.

CHAPTER 1. NOTES ON THE SHARP EL-738 CALCULATOR

Contents

1 Notes on the SHARP EL-738 calculator 7

2 Normal Calculation Mode 11

2.1 Switchonyourcalculator ............................ 12

2.2 TheSETUPmenu................................ 12

2.3 SelectingaMODE ................................ 13

2.4 Normalmode ................................... 14

2.5 Calculatorkeys .................................. 14

3 Financial Calculator Mode 21

3.1 Normalmode ................................... 22

3.2 Interestrates ................................... 22

3.2.1 Simpleinterest .............................. 22

3.2.2 Simplediscount.............................. 23

3.2.3 Compoundinterest ............................ 24

3.3 Annuities ..................................... 26

3.3.1 Presentvalue ............................... 26

3.3.2 Futurevalue................................ 26

3.3.3 Amortisation ............................... 27

4 Statistical mode 31

4.1 Mean........................................ 32

4.2 Standarddeviation ................................ 33

4.3 Linearline..................................... 33

CONTENTS

Chapter 2

Normal Calculation Mode

Display screen

Power ON/OFF

and clear key

{

Cursor keys

Mode key

Key operation

keys

Numerical and

arithmetic keys

CHAPTER 2. NORMAL CALCULATION MODE

2.1 Switch on your calculator

Before using your calculator for the ﬁrst time, reset (initialise) it. Press the RESET switch

located on the back of the calculator with the tip of a ball-point pen.

After resetting the calculator, the initial display of the NORMAL mode appears.

0 . 0 0

T A B D E G

NOTE:

Pressing 2ndF M-CLR 1=will also erase all stored data in the memory and restore

the calculator’s default setting.

Note that I will not write the numbers 0, ....., 9 in blocks. All the other functions will be

writteninblocks.

2.2 The SET UP menu

Press the SET UP key to display the SET UP menu.

D S P D R G D E P R

01 2

T A B D E G

appears on the screen. Press the arrow three times and

T A B D E G

D A T E

will appear on the screen.

A menu item can be selected by using the   keys (the selected number will blink).

Press the =key.

2.3. SELECTING A MODE

To set the number of decimals, press SET UP 00.

D I G ( 0 - 9 ) ?

T A B D E G

appears on the screen.

Press 2 to select two decimals

0 . 0 0

T A B D E G

If you want four decimals press SET UP 0, 0, 4.

(However, we will use two decimals. Press SET UP 0, 0, 2.)

NOTE: The calculator uses a decimal point (0.00) where we use the decimal comma (0,00).

2.3 Selecting a MODE

Press MODE .

The menu display appears

T A B D E G

N O R M A L S T A T

CHAPTER 2. NORMAL CALCULATION MODE

Press 0.

0 . 0 0

T A B D E G

appears on the screen

2.4 Normal mode

The NORMAL mode allows you to perform ﬁnancial, arithmetic or scientiﬁc calculations.

2.5 Calculator keys

The keys are classiﬁed according to the work they do.

The following keys are worth mentioning:

•ON: ON/C

Last key, ﬁrst row. To switch on the calculator. The ON/C key also clears the

screen. To preserve the batteries, the calculator turns itself oﬀ after about 10 minutes.

•OFF:

O N / C

O F F

The orange function on the red ON/C key. Press 2ndF ON/C to switch your

calculator oﬀ.

•NUMERIC KEYS: 1, 2, 3 .... 9, 0

These keys are used to enter numbers.

•MULTIPLICATION X

Second last key, third last row.

•DIVISION ÷

Second last key, sixth row.

•EQUAL =

Last key, last row.

2.5. CALCULATOR KEYS

•CLEAR ON/C

Last key, ﬁrst row.

•BRACKETS ( )

Last key, third last row and second last row.

Use the (and )keys to place parentheses around parts of expressions. The closing

parenthesis )may be omitted.

•NEGATIVE +/-

Second key, last row.

This key is used to enter a negative number or change the sign of a number, while

the −key is used for the operation of subtraction. Note the diﬀerent ways in which

subtraction, with the long dash, and the sign of the number, with a small dash, are

displayed.

For example: 3 −2 and 3+(-2).

Example:

Add 8 to −5

Press 8 ++/- 5=

The answer is 3.

Subtract −5from8.

Press 8 −5=

The answer is 13.

Subtract −5from−8.

Press +/- 8-+/- 5=

The answer is −3.

Add −5to−8

Press +/- 5++/- 8=

The answer is −13.

•DELETE: DEL

If you made a mistake, press DEL (last key, sixth row) to erase the number and then

enter the correct number to continue.

If you want to change a number or sign after you have pressed =use the cursor

to move to the place where you want to change it. Enter the new number or sign, then

press DEL and continue.

CHAPTER 2. NORMAL CALCULATION MODE

•INSERT: INS

Use the cursor to move to the place where you want to insert a number. Press

2ndF INS (sixth row, last key) and enter the number. The cursor will ﬂicker after

the inserted number.

•TO THE POWER key yx.

The 2ndF third key, fourth row

Example:

Calculate 23.

Enter the base number ﬁrst −press 2.

Then press 2ndF yx3=

The answer is 8,00.

If the power consists of more than one term, use brackets for the power.

Example:

Calculate (32)4

Press (32ndF yx2)2ndF yx4=

The answer is 6 561,00.

Example:

Calculate 52/3

Press 5 2ndF yx(2÷3) =

The answer is 2,92.

•SQUARE: (x2)

Use the power key.

Example:

Calculate 42.

Press 4 2ndF yx2=

The answer is 16.

Example:

Calculate 10−1

Press 10 2ndF yx+/- 1=

The answer is 0,10.

Calculate 1

Press 1 ÷52ndF yx2=

The answer is 0,04.

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