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 ------------------------------- 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 ------------------------- 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.
Scientific Calculator DES-38D 1.09 Update
2023-04-04
Fixed a bug where a leading E was reported as an erroneous entry when in Hex Entry Mode.
AppPure.com and the download link of this app are 100% safe. The download link of this app will be redirected to the official App Store site, thus the app is original and has not been modified in any way.
Fixed a bug where a leading E was reported as an erroneous entry when in Hex Entry Mode.
1.08
2023-02-28
User Interface Improvements
1.07
2021-06-05
Updates for iOS14 and iPhone 12 capability Some bug fixes Corrected some typos Some UI improvements Added a full pdf User Guide version of the on-line help screens that can be emailed or printed
1.06
2020-06-26
Minor UI improvements iOS 13 and iPhone 11 compatibility
1.05
2018-05-28
Now includes graphing capability. Run a statistical analysis and instantly get a scatter plot of your X-Y data plus 8 regression lines.