Scientific Calculator DES-38D 4+

Scientific & Logical Functions

Dohmann Engineering Services

Designed for iPad

    • 4.3 • 3 Ratings
    • $5.99

Screenshots

Description

The DES-38D is an easy-to-use, multi-line Scientific Calculator with intuitive, left-to-right data entry & display.

It was designed and developed by a professional engineer with a variety of features to suit the needs of engineers and mathematicians, including extensive statistical analysis & graphing capabilities. However, it is extremely simple to use and is suitable for anyone who needs an advanced calculator.

The name of the DES-38D calculator comes from the fact that it utilizes base-10 arithmetic which can represent numbers with a 38-digit mantissa and an exponent range of -128 to + 127.

The DES-38D is universal app that is fully functional in both portrait and landscape modes on all iPad and iPhone devices. No need to rotate to landscape unless you need a wider display area.

All current and future features are included for one low price. We will never nag you for more money.

KEY FEATURES:
• Supports Hex, Binary, and Octal number bases in 64-bit, 32-bit, 16-bit, or 8-bit word lengths
• Accepts data entry in Decimal, Scientific, or Fractional notation (& they can be mixed)
• Memory and Result data can be displayed in Decimal, Scientific, or Fractional notation independently of how the equation was entered
• Angle entry and computations can be performed in degrees, radians, gradians, or turns
• 10 Memory Registers
• 4 Display Lines: Equations, Result, current Memory Register, and Error/Information Messages
• All Display Lines read in normal human, left-to-right form
• The [-] key can be used for subtraction or negation as you type - no need to use the [+/-] key after the fact (although you can)
• All equations are evaluated, and the Result field is updated "on-the-fly" as you enter your formula. The [=] key merely saves the equation & result to the History/Tape file
• All Equations & Results are saved in a History/Tape file
• Equations & Results can be recalled from the History/Tape file for reuse in other equations
• Sliders to rapidly adjust Display Precision, Decimal-to-Scientific notation switching, and Decimal to Fraction notation switching
• Keys for e and π plus a table with many additional scientific and mathematical constants that can easily be included in equations
• Extensive built-in help screens
• Copy and paste with simple tap and long touch gestures
• Use swipe gestures to rapidly display all Memory Registers at once, all Constants, and the History/Tape file
• Fast and simple advanced statistics functions - simply enter a data set and instantly get over 90 statistical calculations including 8 different regressions as well as a graphic plot of the regression lines
• Up to 10 Statistics Data Sets with the ability to import CSV files and print, email, or share Data Sets and Calculation Results
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LIST OF MATH & LOGIC FUNCTIONS

• Add, Subtract, Multiply & Divide (of course)
• Floored and Euclidean Modulus
• Percentages - including Percentage, Add-On, Discount, and Ratio calculations
• Square, Cube, and nth roots
• Square, Cube, and nth powers
• Base-10, Base-2, Base-n, and Natural Logarithms
• 24 Trigonometric Functions
• Combinations & Permutations
• Coordinate Conversions between Polar & Rectangular
• A number of Random Number Generators to simulate coin flips, dice throws, card draws and general purpose random numbers
• Reciprocals
• Factorials & Double Factorials
• AND, NAND, OR, NOR, XOR, XNOR, NOT
• Shift and Rotate Bits
* Advanced Statistics with over 90 statistics values including the results of 8 different regressions plus graphing capability
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We welcome your feedback. The app includes an email option to send comments or suggestions to us at support@dohmann.com

If you enjoy our app, please rate and review us in the App Store.

Thank you for using DES-38D.

What’s New

Version 1.09

Fixed a bug where a leading E was reported as an erroneous entry when in Hex Entry Mode.

Ratings and Reviews

4.3 out of 5
3 Ratings

3 Ratings

jgchgccj ,

Waste of money

Bought this to help with studying radicals. Root index will only show as a “4” no matter what you type in as the index! Layout is not intuitive

Developer Response ,

As explained in the User Guide, the symbol used for arbitrary roots indicates a “4th or greater root operation”. There is no better single-character symbol available to indicate an arbitrary root operation. We chose that option over wasting display spaces by using multiple characters to indicate the exact root since it’s obvious by the index number you enter.

How much more intuitive can a scientific calculator be? If you have suggestions for improvement, we would welcome them. Does any other scientific calculator app have a user guide as detailed as this one? Tap on the info icon to peruse the in-app docs or you can email or print the entire 27-page manual.

I hope your attitude toward our app will improve as you become more familiar with it. Again, we welcome any suggestions for improvement.

App Privacy

The developer, Dohmann Engineering Services, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Supports

  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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