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Within this project, we developed alternative scientific firmware for the HP-20b and HP-30b business calculators. As part of this, a comprehensive mathematics library has been developed. Check out the subversion sources decn.{c,h} and complex.{c.h}

WP 34S turns said business calculators into powerful keystroke-programmable scientific instruments. There is a printed manual available for WP 34S v3.2. Look here:

WP 34S is field-proven since 2011. We succeeded in satisfying the most fastidious users - read about their experience at

Recently, we've updated WP 34S to v3.3. And we've derived an entry-level scientific calculator for the same platform: WP 31S. Spiral bound A5 manuals for both can be made available shortly but are put on hold until there are sufficient orders in advance to justify printing (please see

System Requirements

System requirement is not defined

Download Package list

Latest 5 files
名稱 大小 日期 下載總數 8.7 MB 2016-01-30 03:45 114
wp-31s-emulator-macosx.dmg 9.9 MB 2016-01-30 03:45 31
wp-31s-emulator-linux64.tgz 2.9 MB 2016-01-30 03:45 26
wp-31s-emulator-linux.tgz 2.9 MB 2016-01-30 03:45 13 23.7 MB 2016-01-30 03:45 207
All Files
wp-31s-emulator-linux.tgz2.9 MB2016-01-30 03:4513
wp-31s-emulator-linux64.tgz2.9 MB2016-01-30 03:4526
wp-31s-emulator-macosx.dmg9.9 MB2016-01-30 03:4531
wp-31s-emulator-windows.zip8.7 MB2016-01-30 03:45114
wp-34s-emulator-windows.zip23.7 MB2016-01-30 03:45207
wp-34s-emulator-macosx.dmg23.7 MB2016-01-30 03:4550
wp-34s-emulator-linux64.tgz8.8 MB2016-01-30 03:4514
wp-34s-emulator-linux.tgz8.8 MB2016-01-30 03:4541
wp34s_V3.zip23.0 MB2015-12-22 22:4556
revision.txt0.2 KB2015-12-22 21:2620
README.TXT3.0 KB2015-12-22 21:2524
wp31s.zip2.7 MB2015-12-22 21:25113
MySamBa.zip240.5 KB2014-10-07 00:3769
wp-34s-flash-windows.zip5.9 MB2012-06-02 22:1377
wp-34s-flash-macosx.dmg11.1 MB2012-06-02 22:1222
wp-34s-flash-linux64.tgz109.3 KB2012-06-02 22:1031
wp-34s-flash-linux.tgz111.1 KB2012-06-02 22:1022
wp34s_Fonts.zip65.7 KB2014-07-07 02:2910
Manual_wp_34s_3_1.pdf8.5 MB2014-07-07 00:3464
Command-Aliases.pdf349.8 KB2014-07-06 23:5128
Manual_wp_31s_1_2q.pdf1.8 MB2014-05-01 16:2162
Flashing a WP 34S using an Arduino Nano.pdf671.8 KB2014-02-20 18:06165
WP34s_Assembler_Tool_Suite.pdf422.9 KB2014-02-05 03:4932
WP_34S_Beg_Guide.pdf3.1 MB2012-07-31 15:2867
IR-Transmitter.pdf98.4 KB2012-06-02 22:2023
How to install crystal and IR diode.pdf3.7 MB2012-06-02 22:20159
Older Versions
WP34s_Assembler_Disassembler.pdf300.9 KB2012-02-13 18:1328
Manual_wp_34s_2_2.pdf4.0 MB2012-02-13 18:1339
wp34s-V22-2738.zip13.8 MB2012-03-30 03:0929
An HP16C WP 34S Dictionary V5.pdf800.9 KB2011-12-08 00:2464
hhc2011_wp34s_asm_16Sep2011_p.pdf598.4 KB2011-09-28 14:5928
wp34s-HHC2011.pdf3.3 MB2011-09-28 14:5995