Hp10 calculator

Hp10 calculator DEFAULT

hp 10bII - Resetting

At times, the hp 10 bii calculator may get locked up or not respond correctly. The hp 10bii calculator may require a reset for a variety of reasons. Resetting the calculator will erase the memory and restore the calculator’s defaults. For this reason, it is important that you back up any critical data before resetting.

Resetting the hp 10bII calculator using the keyboard

To completely reset the calculator and erase all user memory, follow the procedure below.

  • Press and hold [ON]. Press and hold the first key from the left (2050) and the first key from the right ([FV]) on the top row.

  • Release all three keys at the same time.

  • The calculator will go blank, and then display "CORP HP 2000."

  • The message will disappear and the calculator will display "ALL CLEAR."

  • Press the [ON] key to clear the message.

Resetting the hp 10bII calculator using a paperclip

To halt the calculator and reset the keyboard, follow the procedure below.

  • Turn the calculator over and remove the battery door.

  • Insert a paperclip into the small round hole located between the batteries. Insert the paperclip as far as it will go.

  • Hold for one second then remove the clip.

  • Press the [ON] key.

If the calculator is still not responding, try one of the other methods.

Resetting to drain the capacitor. To drain the capacitor on the hp 10bII calculator, follow the procedure below.

  • Remove the batteries.

  • Place a coin in each battery hole.

  • Press the coin down and towards the top of the calculator, and hold for five (5) seconds.

  • Remove the coin , and put the batteries back in the calculator. The "ALL CLEAR" message will be displayed. Press the [ON] key to clear the message.

Updated On: 16.12.19

Sours: https://www.educalc.net/1614080.page
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An HP-10 repaired

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On a Dutch auction site I brought an estate of three old LED HP calculators. Unfortunately all three showed no functionality when powered. But they were all in a nice cosmetic condition and good candidates for repair.

I started to disassemble the HP-10 to have an internal view.

To open the HP-10 calculator 5 screws located on the backside must be removed. Two screws are located inside the battery compartment, two underneath the back rubber feet and one near the charger connector. When the housing was opened traces of leaking batteries were found and one bended contact finger.

HP10 intern

A main PCB with the power supply and the printer drivers is designed around the battery compartment.
The way of building is identical to the way the woodstock series is build.

On top of the two rows of contact fingers the CPU board is connected. The next pictures show this CPU board.
The weird piece of red colored plastic on the back side of the pcb protects the flex wiring of the printer head
from scratching against the pcb solder points.

 

HP10 internalHP10 internal

This CPU board contains two rows of gold plated contact fingers. The larger upper row of contacts
connects to the LED display module, the lower row of contacts connects to the keyboard.

 

HP10 internal

A picture of the CPU print with the LED display mounted.

 

HP10 internal

The keyboard print is joined by heat steaks to the upper part of the housing.
Cleaning of the keyboard contacts is not possible. All PCB tracks are gold plated.

 

HP10 power supply

On the main PCB the power supply is located. More information about this power supply can be
found on my power supply page.

 

HP10 internal

On the top of the main pcb two driver chips are mounted to drive the thermal elements of the printer head.
The red and black wires supply the printer motor and the two white wires are connected to the head detection switch.

My calculator needed a good cleaning. After cleaning all the contact fingers and contact holes
this HP-10 came back to live. The printer still suffers from a mechanical issue.

The HP-10 calculator uses the next chip set:

1826-0287 ?
1858-0056Print head driver (2x)
5061-0474CPU

A replacement part for the 1858-0056 print head driver is the NTE2322 chip from NTE Electronics Inc.
The datasheet of the NTE2322 can be found here.

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HP-10 inside related links:

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Sours: https://www.keesvandersanden.nl/calculators/hp10_inside.php
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HP Scientific Calculator 10s+

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Sours: https://www.officeworks.com.au/shop/officeworks/p/hp-scientific-calculator-10s-tehp10s
Break Even Calculations (Cost Volume Profit) HP 10bII Plus Financial Calculator

HP-10

Adding Machine Logic

The HP-10 was modeled after a standard desktop "10 Key" adding machine. Adding machines use their own style of logic. To add numbers on an adding machine, the user clears the machine (either by an explicit clear command or a previous total command,) enters the first number, presses the + key which adds it to zero, enters the second number and presses + again to add it to the previous result. For adding and subtracting, an adding machine is much like RPN, except that the first number is added to zero rather than Entered.

For multiplications, the user enters the first number, presses the multiplication key, enters the second number and presses the = key. (The + key could then be pressed to add the product to the running sum.) So for multiplications and divisions, an adding machine looks algebraic.

The HP-10, like some other adding machines, combined + and = onto one large key. It was always clear from the context whether the += key meant + or =. For example, if the user pressed Clear 30 + 4 × 5 += +=, then the first += was interpreted as =, and the second was a +, (ie 30 + (4×5)) yielding a total of 50.

While this mixed logic, may seem strange to someone who has never used an adding machine, it was (and is) quite efficient for computing sums of products, and that's what order forms, inventory forms etc. are.

A Small Function Set

The HP-10 performed the basic 4 mathematical functions, as well as the percent function. It had one memory register that could be added to, subtracted from, recalled or cleared.

Some other functions:

  • S: Printed a subtotal. This printed the running sum and left the sum intact for further calculating.
  • T: Printed the Total. Like S but also cleared the total for the next problem.
  • (shift) S: Printed the display without subtotalling.
  • (shift) T: Printed a row of "###############"
  • ^: Paper advance.

The decimal point could be fixed by pressing the shift key followed by 0-8. Unlike the Fix display mode of other HP calculators, the HP-10 rounded all numbers to the current display format both internally and externally. (For example if 2.25 was displayed, (shift) 1 would display 2.3 and (shift) 2 would then display 2.30.) The shift key followed by 9 produced a floating decimal display. (All digits except trailing zeros displayed.)

An automatic decimal mode was engaged by pressing (shift) followed by the decimal point key. In this mode a decimal point was automatically inserted two position from the right in each number entered. (This could be overridden by pressing the decimal point during entry.)

Like other adding machines repeat addition and subtraction consisted of simply pressing the + or - key the appropriate number of times. Also, like other adding machines, the HP-10 had no scientific/engineering notation.

Printer Modes

A sliding switch could be set to:

  • DSP: Display Only Mode.
  • PRT: Printer Only Mode. (Display turned off.)
  • ALL: Display and Print.

A Quote from the Introduction

"The human mind is a paradox. It can store billions of facts and make critical judgements to solve complex problems several times a day; but when it comes to using numbers, civilized man is ill-adapted to work with them. Ask a master chess player to multiply 137 x 23.64, and chances are he'll need a pencil and paper to figure it out.

So, it makes sense in this electronic age to let machines do the arithmetic, the "number-sorting," and let people do what they do best—making decisions, understanding concepts, and thinking up new ideas.

With your HP-10 Handheld Printing Calculator, you have formed a very advantageous partnership. The HP calculator deals with numbers quickly and accurately, leaving you free to concentrate on more important tasks. Since so much of our civilization does deal with numbers, isn't it smart to let a machine do such uninspiring work as adding columns of figures, calculating discounts, and performing long division? Over one million people throughout the world are already using Hewlett-Packard calculators to become more efficient and more productive."

Front View (~47K) The white spot next to the power switch provides a visual indication that the calculator is on even when the display is switched off.
Three quarter view (~69K).

Manual Available

HP-10 features

10 Series Dimensions and Weight

Price: $175

Introduction-Discontinuation: 1977-1979

Go back to the main exhibit hall
Next Calculator Made
Previous Calculator Made

Sours: https://www.hpmuseum.org/hp10.htm

Calculator hp10

Over the years, I have received many questions about financial calculators. I will compile a list of the most frequently asked questions here.

Q: My 10B (or 10BII) is showing a comma instead of a decimal point. How do I fix this problem?

A: This is easily the most commonly asked question. I wish I knew how people got themselves into this situation, because it seems unlikely that it could happen by accident. Here is how to solve the problem: Press Shift. (decimal point).

A little background on this. In the U.S. and many other countries, we use a decimal point as the radix point (or decimal separator) and a comma as the thousands separator. Many other countries do exactly the opposite. For a complete list, see the decimal separator article on Wikipedia. Interestingly, as far as I can tell this has nothing to do with the side of the road on which you drive. Obviously, the 10B (and 10BII) was created with worldwide users in mind.

Q: How do I change the number of decimal places that are displayed?

A: Simply press Shift= and then a number key. For example, to display five decimal places, press Shift=5.

Q: What batteries does the HP 10B or HP 10BII use?

The HP 10B (the older version) uses three 357 batteries. The HP 10BII (newer version) uses two 2032 batteries. In both cases the batteries are very easy to change by simply opening the battery cover on the back side of the calculator. Do yourself a favor and purchase them online as you will save a lot of money compared to buying from your local store. Using the links to Amazon.com will save you money and help support this site.

Q: How do I enter a negative number into one of the TVM keys on the HP 10B (or 10BII)?

A: The way to do it is by using the +/- (change sign) key. For example, to enter -1,000 into FV, press 1000 +/-FV.

Q: How can I review and edit cash flows that I have entered into the CFj key?

A: After entering your cash flows, press RCL and then CFj. That will put you into edit mode and you will see CF0 on the screen. Press the + key to move down the list to CF1, then the frequency of CF1, then CF2, and so on. The - key will move you backwards in the list. Any time that you have a particular cash flow or frequency showing on the screen you can type in a new value for that cash flow or frequency. Press the Input key after typing the new value to enter it into the list. You can press the C key to exit from edit mode.

Q: How do I find roots other than square roots using the HP 10B (or 10BII)?

In finance it seems that we are forever calculating various roots (cube root, fourth root, 365th root, etc). Fortunately, this is pretty simple to do if you can remember a simple mathematical rule:

\[\sqrt2050{X} = {X^{\frac{1}{N}}}\]

So, to calculate the 5th root of 100, we simply raise 100 to the 1/5th power. To do this on the 10B type: 100 yx 5 1/x=. In this example, the 5th root of 100 equals 2.51189. Note that after you press yx the screen will say "Pending" because the calculator is waiting for you to complete the data entry. Using this technique you can calculate any root.

Q: My calculator only has a key to calculate natural logarithms. How do I calculate logarithms to other bases (say, base 10)?

A: Most often, in finance, we use natural logarithms (base e), usually abbreviated as Ln(x). However, sometimes we need to use other bases. Converting from base e to any other base can be done with the following formula (I'm converting to base 10):

\[Lo{g_{10}}\left( X \right) = \frac{{Ln\left( X \right)}}{{Ln\left( {10} \right)}}\]

So, just calculate the natural log of your number, and then divide it by the natural log of the new base. For example, Log10(3) = Ln(3)/Ln(10) = 0.478.

« Return to HP 10B or HP 10BII tutorial

Sours: http://www.tvmcalcs.com/calculators/faq/hp10b_faq
Internal Rate of Return (IRR) - HP 10bII+ Financial Calculator

HP-10B

The HP-10B (F1636A) is a student business calculator introduced in 1987. The model of this calculator proved to compete well with the higher end RPNHP-12C.

Two versions of the 10B were produced, the first version came with orange lettering around the keys, the later model (in 2000) with teal-green labels.[1] The functionality of the two versions appears to be identical.

The successor HP 10bII (F1902A), which was introduced in 2001, is essentially a cosmetic upgrade offering the same overall functionality, but actually reduces the available numbered-storage registers from 15 to 10. Early production runs were of poor quality; newer calculators have apparently solved this shortcoming.

In 2011, the 10bII was replaced by the HP 10bII+ (NW239AA) model 1 (codenamed "Bluestar"[2]) with expanded capabilities. This model also allows chain input. The 10bII+ uses a flashable Atmel AT91SAM7L128[3][4][5][6][7] processor with ARM7TDMI core.[8]

In 2015, the internal hardware of the HP 10bII+ changed to use an Atmel ATSAM4LC2CA processor with ARM Cortex-M4 core.[9] The part number and physical appearance of model 2 didn't change except for a "Rev 2" plate on the bottom side.[9] The serial numbers of the new model start with "PHA".[9] The 2×3-pin flash port now uses the USB protocol instead of a TTL serial protocol.[9]

None of the five models supports RPN.

See also[edit]

References[edit]

External links[edit]

Sours: https://en.wikipedia.org/wiki/HP-10B

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