qCalculator Mode

The Organizer’s built-in calculator can perform arithmetic calcula- tions in up to 12 digits.

Calculator mode is selected by

<CALCULATOR>

pressing qthe

 

appropriate number of times.

O .

Each time you press the key, the

display switches as follows:

Calculation mode Currency Conversion mode

Metric Conversion mode ...

Before performing any calculations, press ctwice to clear the display.

An error occurs if the integer section of the calculation result exceeds 12 digits, if the memory exceeds 12 digits, or a number is divided by zero. (“E” is displayed.)

Press c to clear the error message.

Example

Operation

 

Display

 

 

 

 

Mixed calculation

 

 

 

(–24+2) ÷ 4=

-24 +2 /4 =

 

 

–5.5

 

 

 

 

 

 

 

 

 

 

 

 

Constant/repeat calculation

 

 

 

 

 

 

 

The second figure is a constant value

 

 

 

 

 

 

 

(+addition, -subtraction, /division)

 

 

34 + 57 =

 

34

+57 =

 

 

91.

45 + 57 =

 

45

=

 

 

102.

 

 

 

 

The first figure is a constant value

 

 

 

 

 

 

 

(*multiplication)

 

 

 

68 x 25 =

68

*25 =

 

 

1700.

68 x 40 =

40

=

 

 

2720.

 

 

 

 

 

 

 

 

 

 

 

 

Percentage

 

 

 

10% of 200

200 *10 I

 

 

20.

Percentage 9 of 36

9 /36 I

 

 

25.

10% mark-up

200 +10 I

 

 

220.

20% discount

200 -20 I

 

 

160.

 

 

 

 

 

 

 

 

 

 

 

Root

 

 

 

25 – 9

 

 

25

-9=O

 

 

4.

 

 

 

 

 

 

 

 

 

 

 

 

 

An

 

 

 

 

43

 

 

4 *==

 

 

64.

 

 

 

 

Unit division

 

 

 

1/8

 

 

8 /=

 

 

0.125

 

 

 

 

 

 

 

 

 

 

 

 

Memory function

 

 

 

 

25 x 5 =

R25 *5 U

 

M

125.

–) 84 ÷ 3 =

84

/3 Y

 

M

28.

+) 68 +17

 

68

+17 U

 

M

85.

(Total) =

 

T

 

M

182.

123456789098 x

 

 

 

 

 

145 =

 

 

123456789098 *145 =

 

 

 

17901234419210

 

 

E17.9012344192

 

 

 

 

(17.9012344192 x 1012 = 17901234419200)

 

22

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Image 24
Sharp EL-6990 operation manual Calculator Mode, CAL Culat or, Example Operation Display

EL-6990 specifications

The Sharp EL-6990 is a versatile scientific calculator that is particularly well-suited for students, engineers, and professionals who require advanced calculations for their daily tasks. It is known for its robust features, user-friendly design, and innovative technology, making it an invaluable tool in a variety of settings.

One of the primary features of the Sharp EL-6990 is its large 2-line display that provides a clear view of calculations and results. The dual-line feature allows users to input equations and see the results simultaneously, enhancing the user experience and reducing errors during complex calculations. The display is also capable of showing fractions, equations, and various other functions in a format that is easy to understand.

The calculator is equipped with a comprehensive range of built-in functions, including more than 400 scientific and statistical functions. This includes everything from basic arithmetic operations to advanced statistical calculations, such as standard deviation and regression analysis. Furthermore, the EL-6990 supports complex numbers and can perform operations with them, which is particularly beneficial for higher-level mathematics and engineering courses.

In addition to its wide array of mathematical functions, the Sharp EL-6990 also features programmable capabilities. Users can store previously calculated formulas and equations for quick access, allowing for increased efficiency when working on repetitive tasks. This programming function makes it a popular choice among both students and professionals who need to streamline their workflow.

The EL-6990 incorporates Sharp’s proprietary WriteView technology, which enables users to view and edit expressions in a format that replicates traditional mathematical notation. This feature makes it easier for users to input complex formulas and understand the relationship between inputs and outputs.

Another notable characteristic of the Sharp EL-6990 is its portability. Designed with a compact body, the calculator is lightweight and easy to carry, making it a convenient companion for students on the go. Its durable construction and user-friendly interface further enhance its appeal, making it suitable for extensive daily use.

In conclusion, the Sharp EL-6990 is a powerful scientific calculator, offering a range of features and technologies tailored to meet the needs of students and professionals alike. Its clear display, extensive function library, programmability, and innovative WriteView technology set it apart as a reliable choice for anyone looking to enhance their computational efficiency. Whether for classroom use, fieldwork, or extensive calculations, the EL-6990 is engineered to deliver performance and reliability.