Contents

Entering the PROG mode

75

Selecting the NORMAL program mode or the NBASE

 

program mode

75

Programming concept

75

Keys and display

76

Creating a NEW Program

76

Creating a NEW program

76

Use of variables

77

Programming Commands

79

Input and display commands

79

Flow control

81

Equalities and inequalities

82

Statistical Commands

83

Editing a Program

84

Error Messages

85

Deleting Programs

86

Chapter 8: Application Examples

87

Programming Examples

87

Some like it hot (Celsius-Fahrenheit conversion)

87

The Heron Formula

89

2B or not 2B (N-base conversion)

91

T test

93

A circle that passes through 3 points

95

Radioactive decay

97

Delta-Y impedance circuit transformation

99

Obtaining tensions of strings

102

Purchasing with payment in n-month installments

104

Digital dice

106

How many digits can you remember?

107

Calculation Examples

110

Geosynchronous orbits

110

Twinkle, twinkle, little star (Apparent magnitude of stars)

111

Memory calculations

113

The state lottery

114

5

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Sharp EL-5230, EL-5250 operation manual Application Examples

EL-5230, EL-5250 specifications

The Sharp EL-5250 and EL-5230 are advanced scientific calculators that cater to students, professionals, and anyone in need of a reliable tool for complex calculations. Both models are designed with a blend of functionality, portability, and user-friendliness, making them excellent choices for math and engineering tasks.

The Sharp EL-5250 is equipped with a wide range of features ideal for higher-level calculations. It supports over 500 functions, including trigonometric, exponential, logarithmic, and statistical computations. The calculator also includes built-in memory functions, allowing users to store and recall values effortlessly. The large, easy-to-read LCD display can present multiple lines of data simultaneously, enhancing clarity and reducing the need for repetitive calculations.

On the other hand, the EL-5230, while slightly less advanced, still offers a robust set of functions. This model is particularly well-suited for students in high school or early college, providing essential functionalities for algebra, geometry, and basic statistics. Its 240 functions cover a variety of mathematical disciplines, making it a versatile option for different educational needs.

Both calculators feature Sharp's unique "MathPrint" technology, which is a standout characteristic allowing users to view fractions, square roots, and other expressions in a format more akin to traditional textbook layouts. This technology greatly enhances comprehension and usability, particularly for visual learners.

The calculators are powered by dual power sources, utilizing both solar and battery power, ensuring reliability in diverse environments. The compact and lightweight design of the EL-5250 and EL-5230 makes them highly portable. Users can easily carry them in a backpack or briefcase without added bulk.

Durability is another aspect where Sharp excels. The calculators are built to withstand regular use, featuring a sturdy exterior. Additionally, Sharp provides a protective cover that helps prevent damage during transport, making these calculators a long-term investment for users.

In summary, both the Sharp EL-5250 and EL-5230 deliver exceptional performance with their extensive features and advanced technology. They are perfect for those who require reliable and efficient tools for various mathematical tasks, whether in education or professional settings. With their user-friendly designs and durability, these calculators continue to be reliable companions for anyone working with numbers.