HP calculator museum: HP35s Scientific Calculator, 2003

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Parent Category: HP48/49

Category: Museum

Created on Wednesday, 05 June 2013 21:22

Last Updated on Wednesday, 05 June 2013 21:22

Published on Wednesday, 05 June 2013 21:22

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The HP 35s is Hewlett-Packard's top-of-the-line pocket scientific calculator, celebrating the 35th anniversary of the HP 35, the first pocket scientific calculator, which was introduced in 1972. It is the successor to the 33s and the famous 32SII, among others.

Over the 33s, the 35s adds enhanced complex number support, better programmability, EOS instead of AOS-style input in algebraic mode, and support for vectors, among other improvements. Essentially, it appears to take a 33s, give it a more traditional appearance, and add some of the most important features from the 15C and 42S.

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HP calculator museum: HP39+ student graphic calculator, 2003

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Parent Category: HP48/49

Category: Museum

Created on Wednesday, 05 June 2013 20:58

Last Updated on Wednesday, 05 June 2013 20:58

Published on Wednesday, 05 June 2013 20:58

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HP-39g series calculators are the successors of HP-38G.

There are five calculators in the 39 series of HP graphing calculators. These calculators have algebraic entry modes, and can perform numeric analysis together with varying degrees of symbolic calculation. All calculators in this series are aimed at high school level students and are characterised by their ability to download (via cable or infra-red) APLETs or E-lessons. These are programs of varying complexity which are generally intended to be used in the classroom to enhance the learning of mathematics by the graphical and/or numerical exploration of concepts. Some hundreds of these can be found on various websites.

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Apache POI contribution patches

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Parent Category: Internet www

Category: Apache

Created on Saturday, 01 June 2013 11:34

Last Updated on Saturday, 08 June 2013 18:01

Published on Saturday, 01 June 2013 11:34

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The Apache POI Project's mission is to create and maintain Java APIs for manipulating various file formats based upon the Office Open XML standards (OOXML) and Microsoft's OLE 2 Compound Document format (OLE2). In short, you can read and write MS Excel files using Java. In addition, you can read and write MS Word and MS PowerPoint files using Java. Apache POI is your Java Excel solution (for Excel 97-2008). We have a complete API for porting other OOXML and OLE2 formats and welcome others to participate.

My Contributions to the Open Source project Apache POI: adding missing Excel functions in Java

Bug 54673 - [PATCH] Simple wildcard support in HLOOKUP, VOOLKUP, MATCH, COUNTIF
Add support for wildcards
? (question mark) Any single character
    For example, sm?th finds "smith" and "smyth"
* (asterisk) Any number of characters
    For example, *east finds "Northeast" and "Southeast"
~ (tilde) followed by ?, *, or ~A question mark, asterisk, or tilde
    For example, fy91~? finds "fy91?"

Bug 54723 - [PATCH] Support for percentage in VALUE() function
support for VALUE("30%") or VALUE("30 %") as excel support this

Bug 54720 - [PATCH] Support for Row/Col Area Range like 8:8 or H:H
Range support in the form of NameType.ROW:NameType.ROW    like 8:8 or 6:8

Bug 55037 - [PATCH] patch for missing function DELTA
Add support for function Delta
http://office.microsoft.com/en-001/excel-help/delta-HP005209057.aspx

Bug 55036 - [PATCH] patch for missing function Dec2HEx
Converts a decimal number to hexadecimal.
http://office.microsoft.com/en-001/excel-help/dec2hex-HP005209054.aspx

Bug 55038 - [PATCH] patch for missing function Dec2Oct
Converts a decimal number to octal.
http://office.microsoft.com/en-001/excel-help/dec2oct-HP005209055.aspx

Bug 55041 - [PATCH] patch for missing function CODE
Returns a numeric code for the first character in a text string. The returned code corresponds to the character set used by your computer.
http://office.microsoft.com/en-001/mac-excel-help/code-function-HA102927539.aspx

Bug 55042 - [PATCH] patch for missing function COMPLEX
Converts real and imaginary coefficients into a complex number of the form x + yi or x + yj.
http://office.microsoft.com/en-001/excel-help/complex-HP005209019.aspx

Bug 55043 - [PATCH] patch for missing function QUOTIENT
Returns the integer portion of a division. Use this function when you want to discard the remainder of a division.
http://office.microsoft.com/en-001/excel-help/quotient-HP005209227.aspx

Bug 55047 - [PATCH] patch for missing function REPT
Repeats text a given number of times. Use REPT to fill a cell with a number of instances of a text string.
http://office.microsoft.com/en-001/mac-excel-help/rept-function-HA102927993.aspx

Bug 55055 - [PATCH] patch for missing function Bin2Dec
Converts a binary number to decimal.
Number cannot contain more than 10 characters (10 bits). The most significant bit of number is the sign bit. The remaining 9 bits are magnitude bits. Negative numbers are represented using two's-complement notation.
http://office.microsoft.com/en-001/excel-help/bin2dec-HP005209002.aspx

Bug 55058 - [PATCH] patch for missing function FactDouble
Returns the double factorial of a number.
http://office.microsoft.com/en-001/excel-help/factdouble-HP005209085.aspx

Bug 55079 - [PATCH] patch for missing function IMAGINARY
Returns the imaginary coefficient of a complex number in x + yi or x + yj text format.
http://office.microsoft.com/en-001/excel-help/imaginary-HP005209120.aspx

Bug 55080 - [PATCH] patch for missing function IMREAL
Returns the real coefficient of a complex number in x + yi or x + yj text format.
http://office.microsoft.com/en-001/excel-help/imreal-HP005209131.aspx

Bug 55082 - [PATCH] patch for missing function ROMAN
Converts an arabic numeral to roman, as text.
http://office.microsoft.com/en-001/excel-help/roman-HP005209238.aspx

More to come soon!