Anonymous wrote on 14-Apr-2019, with regard to Changing the HP10BII Periods per Year Setting.
Very helpful thank you (read...)

In replying to Anonymous who on 17-Feb-2019 wrote: how to change the setting when finding for monthly compounding and for compounding daily

Sam wrote on 11-Apr-2019, with regard to Tutorial for Users.
whatever happened to the stress programme "Pipe Star 2" (read...)

Anonymous wrote on 08-Apr-2019, with regard to Blaise Pascal - first digital calculating machine.
I'm not surprised to see that you choose to remain anonymous. (read...)

In replying to Anonymous who on 28-Dec-2017 wrote: I'm not surprised to see that you choose to remain anonymous.

Bill wrote on 07-Apr-2019, with regard to Black-Scholes Equation Implementation on Microsoft VB.
In the above function what is the variable S , X , T , r , and v ? (read...)

Anonymous wrote on 04-Apr-2019, with regard to hp 10bII - Tutorial.
How do I calculate intrest rate implict using HB calculator? (read...)

Anonymous wrote on 26-Mar-2019, with regard to HP 41cx Emulator.
Hi, I also used this calculator in back then! May I ask you for a favor: If you type the following sequence on the HP41: 2000 Enter 0.02 x + What do you get? I thought that I remember that you get 2040 when you do this, however, using an emulator, this doesn't work. I am in discussion about this with James Thomson who wrote PCalc for iOs, which I use as my HP41 replacement (for simple calculations). Your answer would really help me. Cheers, Nikolaus (read...)

In replying to Marcel who on 15-Jan-2018 wrote: Super, vielen Dank, das war mein bester Rechner HP41, HB41c und HP41CX im Gymnasium und im Studium in den 80 Jahren. Brauche den heute immer noch nach bald 40 Jahren. Beste Grüsse aus St. Moritz und Zürich. Marcel Soppla

Anonymous wrote on 24-Mar-2019, with regard to HP10bii Troubleshooting.
Set your P/YR to 1 payment per year guys!! It solved my problem now im getting correct numbers!! (read...)

In replying to Amanda who on 01-Mar-2017 wrote: My calculator is giving me wrong answers when entering N=240, I/YR=0.33, PV=-350,000, FV=0 and PMT is 2113.56 instead of 2120.93. I have tried to play around with it and used N=20 x 12 , I/YR= 4 / 12 , PV=-350,000, FV=0 and PMT was correct @ 2120.93. The P/YR was already being set to 1 payment per year. Cheers.

Christopher wrote on 20-Mar-2019, with regard to Changing the HP10BII Display.
Great guide - much appreciated! (read...)

Anonymous wrote on 13-Mar-2019, with regard to Leonardo da Vinci - first conceived mechanical calculator .
omg i am doing a school project and this website is so helpful (read...)

Anonymous wrote on 10-Mar-2019, with regard to HP 10bII+.
Hi. To best use of any financial calculators, is to have a mathematical equation in mind and then use it to crunch the numbers for you. (read...)

In replying to Ronnie who on 09-Mar-2019 wrote: How to find the total tax liability for $155,000 of taxable income in 20XX, schedule X? Please show work (formula's) using HP 10bll+ Financial Calculator.

Ronnie wrote on 09-Mar-2019, with regard to HP 10bII+.
How to find the total tax liability for $155,000 of taxable income in 20XX, schedule X? Please show work (formula's) using HP 10bll+ Financial Calculator. (read...)

Anonymous wrote on 03-Mar-2019, with regard to HP 39gs.
This site is very useful for me. I'm in trouble with definite integral calculation on HP39gs (ROM v2.22). The following expression does not become zero. ∫(0,360,cos(X),X) = -5.8572E-11 (Angle Measure: Degrees) Is this something like bug? Does anyone know? (read...)

Nola wrote on 01-Mar-2019, with regard to HP 35s Emulator.
Thank you so much Kind regards, Nola bernstein (read...)

In replying to Aeberon2 who on 28-Feb-2019 wrote: Hi NOLA, did anyone reply to your enquiry as I just might be able to help. I still have an HP55 and a 41C plus an excellent 41CX lookalike on an iPad that works perfectly. I’ll look through some of the stuff I obtained back in the late 70s as I have a programming manual and I’m sure there was a section on standard deviation Regards

Aeberon2 wrote on 28-Feb-2019, with regard to HP 35s Emulator.
Hi NOLA, did anyone reply to your enquiry as I just might be able to help. I still have an HP55 and a 41C plus an excellent 41CX lookalike on an iPad that works perfectly. I’ll look through some of the stuff I obtained back in the late 70s as I have a programming manual and I’m sure there was a section on standard deviation Regards (read...)

In replying to Nola Bernstein who on 12-Nov-2016 wrote: Can anyone help me with RPN program instructions for grouped standard deviation HP35S. Manual has ALG instructions only

Jkjk wrote on 25-Feb-2019, with regard to hp 10bII - Tutorial Switch Periods and Commas ....
thank you (read...)

Jim wrote on 20-Feb-2019, with regard to HP 41CX.
How do you clear the RAD 2 on the screen from a 41CX (read...)

Anonymous wrote on 17-Feb-2019, with regard to Changing the HP10BII Periods per Year Setting.
how to change the setting when finding for monthly compounding and for compounding daily (read...)

Mr Zhou wrote on 13-Feb-2019, with regard to hp 10bII - Tutorial Switch Periods and Commas ....
My calculator can’t switch on. It’s new what must we do. (read...)

Kerry wrote on 13-Feb-2019, with regard to HP 42 S RPN Scientific Calculator.
[URL] www.swissmicros.com/dm42.php (read...)

In replying to CRAWLIN'BY who on 07-Jul-2013 wrote: I need to buy a hewlett packard 42s....Where?

Anonymous wrote on 13-Feb-2019, with regard to hp 35s - Entering a Program.
Dumb question What keystrokes are needed to enter STO (J) in hp35s (surveying program) (read...)

In replying to Jason who on 29-Oct-2015 wrote: I am trying to complete the adjustment program for my hp35s. I can not figure out how to code the indirect registers (i) and (j). Can someone advise how to encode this please...

Peter Tong wrote on 10-Feb-2019, with regard to hp 10bII - Tutorial Ordinary Annuities.
Press [1] [Gold Shift] [P/YR]. Then start all over from the top. (read...)

In replying to Lirio who on 09-Feb-2019 wrote: I got wrong answer .. i got 507.55 . What will i do?

Lirio wrote on 09-Feb-2019, with regard to hp 10bII - Tutorial Ordinary Annuities.
I got wrong answer .. i got 507.55 . What will i do? (read...)

Peter Tong wrote on 08-Feb-2019, with regard to HP Quick Calc.
You will need to unscrew the 10 screws and open the front panel to access the tiny coin battery. (read...)

In replying to Rogelio who on 06-Feb-2019 wrote: tipe of batteries? How do you change it?

Peter Tong wrote on 08-Feb-2019, with regard to HP10BII Calculation Example 1.
The P/Yr on your calculator was set to 1. To get the answer, you need to change it back to 12. Or you can simply a push a pin into the reset hole on the back of the 10bII+, this will put the calculator back to factory default settings. (read...)

In replying to Cole who on 07-Feb-2019 wrote: I am getting an answer of -$13,500.00 but unsure why?

Cole wrote on 07-Feb-2019, with regard to HP10BII Calculation Example 1.
I am getting an answer of -$13,500.00 but unsure why? (read...)

Rogelio wrote on 06-Feb-2019, with regard to HP Quick Calc.
tipe of batteries? How do you change it? (read...)

Ramsey wrote on 06-Feb-2019, with regard to HP 10bII+.
no :/ having trouble as well brother (read...)

In replying to Robert who on 05-Nov-2017 wrote: Does anyone know where the CPT button is or equivalent

Jenn wrote on 27-Jan-2019, with regard to Changing the HP10BII Periods per Year Setting.
Very helpful. thank you (read...)

Anonymous wrote on 27-Jan-2019, with regard to Bowmar - First Electronic Calculator Made In USA.
Good to know that tech designers those day were able to leave signatures behind in their work. (read...)

In replying to Canuck who on 26-Jan-2019 wrote: In 1971, I worked for a business machine company, repairing calculators. I was given a 901B to open up and determine repair ability. There, etched into the corner of the display circuit board, was the logo of a certain famous magazine bunny!

Anonymous wrote on 27-Jan-2019, with regard to HP 30b Keyboard.
只有英文手册可用 : Only english manual is available (read...)

In replying to 华海街 who on 27-Jan-2019 wrote: 中文使用说明书

华海街 wrote on 27-Jan-2019, with regard to HP 30b Keyboard.
中文使用说明书 (read...)

Canuck wrote on 26-Jan-2019, with regard to Bowmar - First Electronic Calculator Made In USA.
In 1971, I worked for a business machine company, repairing calculators. I was given a 901B to open up and determine repair ability. There, etched into the corner of the display circuit board, was the logo of a certain famous magazine bunny! (read...)

Anonymous wrote on 24-Jan-2019, with regard to HP 10bII+.
The default is 12 Periods per year and you need to change that to 1 Period per year. Press 1 [Gold Shift] [P/YR]. If correctly set, when you press [Gold Shift] [C ALL] it should display 1 P_Yr. Then enter the appropriate TMV value to compute the FV. Read the following link for detail explanation... [URL] www.educalc.net/427084.page (read...)

In replying to Anonymous who on 24-Jan-2019 wrote: Hello, I'm just trying to do a simple Future value equation with my new HP10BII and cannot seem to get the correct answer... PV=$1000 i=10% N=5 PMT=0 FV=? I know the answer should be $1,610.41 however my answer is always $1,042.36. Please help, this is driving me crazy

Anonymous wrote on 24-Jan-2019, with regard to Changing the HP10BII Periods per Year Setting.
Try this... press 2 [Gold shift] [P/YR] (read...)

In replying to Anonymous who on 24-Jan-2019 wrote: I am tryin to change the period bi-annually please assist I have been trying

Anonymous wrote on 24-Jan-2019, with regard to Changing the HP10BII Periods per Year Setting.
I am tryin to change the period bi-annually please assist I have been trying (read...)

Anonymous wrote on 24-Jan-2019, with regard to HP 10bII+.
Hello, I'm just trying to do a simple Future value equation with my new HP10BII and cannot seem to get the correct answer... PV=$1000 i=10% N=5 PMT=0 FV=? I know the answer should be $1,610.41 however my answer is always $1,042.36. Please help, this is driving me crazy (read...)

MathMaster wrote on 23-Jan-2019, with regard to Why the HP50G is better than the TI89T.
The HP-50G is much more professional than the Ti-89. Natively the HP has more complex libraries: Fourier transforms (even graphically), solving differential equations by Laplace transforms, Hessian matrix, Bessel function, etc. And it incorporates the powerful (user & system) RPL language. In the medium and long term, the HP-50G is a more valuable calculator. Oh, yes, the learning curve of the Ti-89 is not that steep, which is very useful if you live in Sesame Street. (read...)

Anonymous wrote on 21-Jan-2019, with regard to HP 41cx Emulator.
This is a FREE emulator that can run on Microsoft Windows only, (read...)

In replying to Manuel Peñascoso who on 21-Jan-2019 wrote: I buy! Please say the price.

Manuel Peñascoso wrote on 21-Jan-2019, with regard to HP 41cx Emulator.
I buy! Please say the price. (read...)

In replying to Odd Trondal who on 14-Feb-2018 wrote: HP 41CX, fantastic program. I have an original without batteries.

Manuel Peñascoso wrote on 21-Jan-2019, with regard to HP 41cx Emulator.
I buy! Please say the price. (read...)

In replying to Duane who on 12-Jul-2018 wrote: Is this emulator compatible with Windows 10?

Ellen wrote on 23-Dec-2018, with regard to hp 12c (platinum) - Handling Error Conditions.
Put new batteries. Reset both with paper clip and coin. Screen says 1 r when turned on. (read...)

Luis wrote on 20-Dec-2018, with regard to HP50g Calculator Connectivity Kit (CONNX4) also for HP48, HP49.
informacion (read...)

Luis wrote on 20-Dec-2018, with regard to HP50g Calculator Connectivity Kit (CONNX4) also for HP48, HP49.
informacion (read...)

Robert wrote on 27-Nov-2018, with regard to Bowmar - First Electronic Calculator Made In USA.
I worked at Bowmar/Ali in Acton Mass., we also made a wire distance measuring device for the phone company and a stable (Mil spec) electronic device for the Sargent York weapons platform... (read...)

Anonymous wrote on 24-Nov-2018, with regard to HP Graphing Calculator USB Device Driver.
The access violation issue may be 3 reasons: 1st) Your current Connx3 has bug 2nd) Your Windows system needs to be Cleaned Up (read...)

Anonymous wrote on 07-Nov-2018, with regard to How to install HP 10BII Emulator.
If you see the "Whoops!" message, click the Down ⬇ Arrow located at the top right corner of your screen. (read...)

In replying to Harry who on 07-Nov-2018 wrote: I cannot get it to download on windows 10

Harry wrote on 07-Nov-2018, with regard to How to install HP 10BII Emulator.
I cannot get it to download on windows 10 (read...)

Max Weston wrote on 06-Nov-2018, with regard to HP Scientific Calculators.
I have a 48Gx calculator which I purchased approx 25 years ago and its not working (won't turn on) can I send it to someone to get it looked at. I live in Davao Philippines. (read...)

Anonymous wrote on 05-Nov-2018, with regard to hp 10bII - Tutorial Switch Periods and Commas ....
Calculator has no gold color shift key only orange or blue (read...)

Chris Kirby wrote on 19-Oct-2018, with regard to MATH MAGIC, The Ultimate Math Challenge.
Yes, still available. (read...)

In replying to Grant Whitaker who on 18-Oct-2018 wrote: Chris, do you still have this game? I would be really interested in purchasing it.

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