If the result of a calculation is not what you expected, use the following steps to reset the HP 10s calculator. Press [Shift] [CLS] [2] [=] The HP 10s will be display: Mode Clear Press [ON] The HP 10s will perform a quick self-test and if there is an anomaly, clears all stored data and resets the calculator. It successful, display: 0

HP 41CX Emulator written by Warren Furlow (Release 7B). Reference: www.hp41.org Download ( File Size = 150 KB). Update December 2011: There is an installation problem on Windows 7. We have repackage it into a simple zip file. Open the zip file and drop the “V41” into any location. Then navigate into the “V41” folder and double click “V41.exe”.

HP 12c (Platinum) - Setting a Fixed Decimal Place Introduction This document describes how to set the desired number of decimal places on the HP 12C Calculator in standard format and in scientific notation. Instructions for standard format Press and release the gold PREFIX key (f). Press the number key for the desired number of decimal places (0 through 9). The display will show the specified number of decimal places.

The Null-modem emulator (com0com) is a simple virtual serial port driver for Windows. This useful utility allows us to bind the Calculator Emulator to the Connectivity Kit. Aplet can then be downloaded to the PC and then transfer to the Calculator Emulator. Download com0com from cached archive. After install com0com on the PC. Run ‘Setup for com0com’. Change the Address to COM1 and COM2 as shown below.

The HP-25C Hewlett-Packard Pocket Calculators for people who need more than the ordinary. Published: The Straits Times, 3 February 1978, Page 9 The Straits Times, 29 April 1978, Page 17

The Hewlett-Packard HP-65 The world’s first fully programmable pocket calculator is just one example of the kind of calculators we offer: Published: TST, 27 March 1974, Page 12 - Hewlett-Packard Singapore Pte. Ltd. TST, 29 May 1974, Page 26 - Hewlett-Packard Singapore Pte. Ltd. TST, 21 June 1974, Page 6 - Hewlett-Packard Singapore Pte. Ltd.

HP 12c - 30th Anniversary (1981 - 2011) 2011 was a special year for HP 12c. It is 30 years old and still going strong. The HP 12c financial calculator is an iconic consumer electronics product that is still sold under its original name and model number 30 years after it was introduced. With the exception of improved performance due to modern components, the HP 12c that is sold today acts and looks just like it did when it was first snapped up by thousands of financial and real estate students and professionals at its worldwide debut in 1981.

HP 39gs Self Test [ON] [F4] Individual tests can be performed by simultaneously pressing the ON key and the F4 key (the fourth key on the top row). Software build information is briefly displayed, then a test menu is displayed. 1.LCD 2.KEY 3.FLASH 4.SRAM 5.USB 6.RS232 7.BUZZER (Beep-Beep-Beep) 8.IRDA (Send & Receive) A.AUTOTEST (Merry-Go-Round, till battery is flat). Simultaneously press ON and F3 (the third key on the top row) to exit test mode.