Vincent wrote on 20-Feb-2017, with regard to A quick note for new HP 10bii owner.
Many thanks, bless you (read...)

Anonymous wrote on 11-Feb-2017, with regard to Blaise Pascal - first digital calculating machine.
bad information (read...)

Anonymous wrote on 07-Feb-2017, with regard to hp 10bII - Tutorial.
square root (read...)

Anonymous wrote on 06-Feb-2017, with regard to Charles Babbage .
bums (read...)

Your Mom wrote on 06-Feb-2017, with regard to Charles Babbage .
Get spell check Mark! (read...)

In replying to Mark who on 07-Oct-2015 wrote: i have a client that has a nest egg of pv1,500,000. he wants to add pmt of 50,000 for 11 years at i=6% on a 10bII i get 2148552 and with the same entries on my 12c i get 3596029. can anyone explain. thanks, mark

Mike wrote on 01-Feb-2017, with regard to HP 41cx Emulator.
Same here on Windows 7 but, not on XP, I expect this is a permissions issue - anyone have a work-around ? (read...)

In replying to Steven who on 01-Nov-2015 wrote: memory lost shows in the display each time I open the emulator to use it. Is there a remedy for this? Please advise

Wyatt Wong wrote on 31-Jan-2017, with regard to hp 20s scientific calculator.
I found the HP20s manual here: www.manualslib.com/manual/768754/Hp-Hp-20s.html (read...)

Marcio wrote on 22-Jan-2017, with regard to HP 50g.
how can I emulate a HP-50G to my PC. (read...)

Anonymous wrote on 14-Jan-2017, with regard to HP10bii Troubleshooting.
Omg YOU are a LIFESAVER. Thank you (read...)

In replying to Anonymous who on 17-Sep-2013 wrote: That happened to me. I fixed it by resetting the memory by holding down to ON, N and then FV at the same time. After you let go of those 3 keys, a message displays ALL CLEAR. After clearing the memory, my amortization function works again

Anonymous wrote on 11-Jan-2017, with regard to Abacus Simulator.
Who did this?😂😂 (read...)

Anonymous wrote on 09-Jan-2017, with regard to Abacus Simulator.
fuck this shit (read...)

Anonymous wrote on 09-Jan-2017, with regard to Abacus Simulator.
GAY (read...)

Anonymous wrote on 02-Jan-2017, with regard to Bowmar - First Electronic Calculator Made In USA.
Did ya get it from Ed White? (read...)

In replying to Ruth who on 06-Nov-2016 wrote: Mine still works too!!

Zafar wrote on 29-Dec-2016, with regard to Mustafa - Little India, Serangoon Road.
I want Casio fx 2.0 plus algebra.If you have it or able to get from your supplier please contact me.Thank you. (read...)

Peter Tong wrote on 19-Dec-2016, with regard to Changing the HP10BII Periods per Year Setting.
Sorry for the error on the diagram. It has been replaced with the corrected diagram. Thank you for your feedback. (read...)

In replying to Anonymous who on 13-May-2016 wrote: This dude is an absolute idiot and made a diagram of the calculator that incorrectly displays how to change the period. Waste of time. Directions right, picture so wrong

Peter Tong wrote on 19-Dec-2016, with regard to Changing the HP10BII Periods per Year Setting.
Sorry for the error on the diagram. It has been replaced with the corrected diagram. Thank you for your feedback. (read...)

In replying to Anonymous who on 04-Oct-2016 wrote: Really bad instructions. Picture is wrong. Not to mention that there are TWO PYR buttons. I wasted about 20 minutes only to determine I need to select the second PYR button (under the PMT button)

Crotalus wrote on 14-Dec-2016, with regard to Bowmar - First Electronic Calculator Made In USA.
I bought mine as soon as it was available in the Bay Area. It replaced my K&E and wouldn't snag out of a shirt pocket. Often useless because of my colorblindness, if I was in bright conditions. My first PC was an AppleLisa. (read...)

Gian Uberto wrote on 10-Dec-2016, with regard to Serial Cable for Old HP-48G Series.
Is the USB version of the HP48 cable seen as a serial cable by the PC? (read...)

NĂ€mhen wrote on 08-Dec-2016, with regard to Using HP50g Calculator Connectivity Kit (CONNX4).
A mi me pasaba igual pero encontré que eran Malware's que interferían. Lo soluconé descargando ZHPCleaner de la pågina oficial y corriendo el programa. Espero que te sirva (read...)

In replying to Dave Burton who on 04-Dec-2016 wrote: I am unable to connect using my PC. I am using Windows 10 and it cannot find the device. When I plug in the cord, it is finding the device but will not connect. I have tried what you show above and the directions on the disk. Also, I am also unable to update the driver from the disk. Any ideas?

John Dziedzic wrote on 05-Dec-2016, with regard to HP 35 Backside Instructions.
I have a HP-35 scientific calculator and the backside instructions is slightly worn. I would like to replace it. Is it possible to purchase the backside instructions? Thank you . . . John (read...)

Dave Burton wrote on 04-Dec-2016, with regard to Using HP50g Calculator Connectivity Kit (CONNX4).
I am unable to connect using my PC. I am using Windows 10 and it cannot find the device. When I plug in the cord, it is finding the device but will not connect. I have tried what you show above and the directions on the disk. Also, I am also unable to update the driver from the disk. Any ideas? (read...)

Wle wrote on 03-Dec-2016, with regard to How to use an Abacus.
hex, yes i think so.. though it might be better if they would sum to 16 (read...)

In replying to Anonymous who on 29-Dec-2014 wrote: Since the two heaven beads add to 10, and there are still the five earth beads, which means all of the beads towards the centre sums to 15, is it therefore possible to use the abacus for hexadecimal arithmetic?

Da wrote on 30-Nov-2016, with regard to Graphing Calc.
Which shop sell HP Prime Graphing Calculator (read...)

Ron wrote on 29-Nov-2016, with regard to HP Calculator Timeline.
Unless the list was rapidly updated, the Hp 41cx is listed as 1983 (which seems about right). The list seems to be in order. (read...)

In replying to Anonymous who on 28-Nov-2016 wrote: It seems 41CX was forgotten from your list

Anonymous wrote on 28-Nov-2016, with regard to HP Calculator Timeline.
It seems 41CX was forgotten from your list (read...)

Tmtampi wrote on 26-Nov-2016, with regard to hp 12c (platinum) - Calculating a Compound Annual Growth Rate.
Yes, indeed. When you invest, its cash out (-). Any returns are cash in (+). (read...)

In replying to Anonymous who on 14-May-2016 wrote: Why do we have to use CHS to make PV negative? Is it because it represents a cash outflow (i.e. cash outflow of 1000 beginning of period 1, cash inflow of 1500 at end of period 2)?

Katie wrote on 15-Nov-2016, with regard to Using HP 10bII for Markups and Margins Calculation.
what is a margin? (read...)

Nola Bernstein wrote on 12-Nov-2016, with regard to HP 35s Emulator.
Can anyone help me with RPN program instructions for grouped standard deviation HP35S. Manual has ALG instructions only (read...)

Ruth wrote on 06-Nov-2016, with regard to Bowmar - First Electronic Calculator Made In USA.
Mine still works too!! (read...)

In replying to Stan who on 23-Jan-2016 wrote: My Bowmar still works!

Anonymous wrote on 06-Nov-2016, with regard to Leonardo da Vinci - first conceived mechanical calculator .
this was a great help! thx!!! (read...)

Aba wrote on 05-Nov-2016, with regard to hp 12c (platinum) - Resetting the Calculator.
do not work proveerle the Enter, keep showing the news numbers I put and not multiplies (read...)

Ron wrote on 31-Oct-2016, with regard to Malaysia HP Calculator Distributor.
I suspect they DO NOT sell the Hp 17bii (plain) as it was discontinued over 10 years ago. However, it is often available used, often on ebay and for about 1/2 the cost of the new Hp 17bii+. (read...)

Eugeni wrote on 27-Oct-2016, with regard to HP Calculator Connectivity Kit for HP Prime.
I'm an IB teacher and I've installed Connectivity Kit. When I tried to update my HP Prime, the program needs to be updated to add the new firmware. After It's done, Connectivity Kit doesn't detect some of my student's HP Primes (the newest ones, those with wifi). How can I upgrade these HP Primes? I need that because there are some important changes (for instances: I can't add more than 10 digits). (read...)

Connie wrote on 24-Oct-2016, with regard to Malaysia HP Calculator Distributor.
Hi! Do you sell HP Business Calculator 17BII (without +)? How much does it cost? Tq. (read...)

Anonymous wrote on 22-Oct-2016, with regard to hp 10bII+ Plus Self Test.
checksum i get 181.181 (read...)

Anonymous wrote on 22-Oct-2016, with regard to HP 11C.
What are the batteries for this HP 11C ? (read...)

Jon Doh wrote on 21-Oct-2016, with regard to HP 12c Platinum.
How did you buy one in 1977 when the 12C didn't come out until 1981? They didn't start making 12C's in Brazil until the late 1980's. (read...)

In replying to Mortgage Master who on 17-Dec-2013 wrote: I bought the 1977 model made in Brazil and used it until late 1998 when it died. It only used three or four batteries in its entire life of being pounded on 5 hours a day for 20 years. The HP12C Platinum made in China is low quality

Jean Egerer wrote on 17-Oct-2016, with regard to HP 35s.
HP 35 S - how to enter a program to calculate pump sizing (read...)

ED wrote on 14-Oct-2016, with regard to HP 50g.
Price of HP50G? (read...)

Peter wrote on 11-Oct-2016, with regard to HP 12c Platinum Manual.
i am getting a Pr Error message, what is this and how do I fix it? (read...)

Anonymous wrote on 05-Oct-2016, with regard to HP 32s II Manual.
configura una calculadora 32S II y arreglar un programa (read...)

Jairo wrote on 05-Oct-2016, with regard to HP Calculator Connectivity Kit for HP Prime.
quero instalar o kit connectivity da hp prime (read...)

Hi Zola wrote on 05-Oct-2016, with regard to hp 10bII+ Plus Self Test.
I did, yes. It was a setting of some sort. I called the 1-800 phone number for help and they walked me through fixing it real quick! (read...)

In replying to Tanya who on 10-Aug-2016 wrote: Hi Dylan - did you ever sort out why your checksum was at 96.096? Mine is as well and is not producing correct answers. Thanks!

Anonymous wrote on 04-Oct-2016, with regard to Changing the HP10BII Periods per Year Setting.
Really bad instructions. Picture is wrong. Not to mention that there are TWO PYR buttons. I wasted about 20 minutes only to determine I need to select the second PYR button (under the PMT button) (read...)

Zola wrote on 04-Oct-2016, with regard to hp 10bII+ Plus Self Test.
Hi Dylan.How did you fix your problem? Please advise. (read...)

In replying to Dylan who on 08-Mar-2015 wrote: I went through the test and looks like everything came out good except checksum: was 96.096 and battery was: 3.000. What does this mean? I have been having a hard time coming up with correct answers on questions.

Zola wrote on 04-Oct-2016, with regard to hp 10bII+ Plus Self Test.
Hi Tanya, Did you sort out your problem? I have the same error and reset several times and won't work. DId you sort it out? (read...)

In replying to Tanya who on 10-Aug-2016 wrote: Hi Dylan - did you ever sort out why your checksum was at 96.096? Mine is as well and is not producing correct answers. Thanks!

Zola wrote on 04-Oct-2016, with regard to hp 10bII+ Plus Self Test.
Hi All, My calculator have the same error that checksum is 96.096. I did reset but it's still not sorted out. What should I do? (read...)

In replying to Peter Tong who on 25-Aug-2016 wrote: Try this... [URL] www.educalc.net/141163.page to setup the calculator.

Anonymous wrote on 04-Oct-2016, with regard to Abacus Simulator.
no ur gaaaaayyyyyyyyyyy (read...)

In replying to Anonymous who on 04-Oct-2016 wrote: gaaaaayyyyyyyyyy

Anonymous wrote on 04-Oct-2016, with regard to Abacus Simulator.
gaaaaayyyyyyyyyy (read...)

In replying to Anonymous who on 15-Feb-2016 wrote: mhnjia fieX

Anonymous wrote on 04-Oct-2016, with regard to Abacus Simulator.
boiiiiiiiii (read...)

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