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Super-45
If ON, the calculator works in a much improved and expanded mode. For details see the page "Super-45". |
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Fast Calculations
If ON, the simulator performs calculations at the full speed of the iPad (orders of magnitude faster than the HP-45). |
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Hyperbolic Functions
If ON, the shifted function of the key EEX is used as prefix for hyperbolic functions. The grads mode (GRD) is no longer available. |
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Timer Function
12: Stopwatch counts up to 12:59:59.99, then wraps around to 01:00:00.00
100: Stopwatch counts up to 99:59:59:99, then wraps around to 00:00:00.00
Chess: Use the timer as a game clock (see section "Timer")
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Sound Volume
Set the volume of the key-click and other sounds. |
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Large Display Digits
If ON, large iPad-generated digits are used in place of the original HP LEDs. |
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Printer
If the printer is set to Visible, RPN-45 HD works in most ways like the HP-91.
In particular, if Super-45 is off, very small numbers are not shown as 0, but in SCI 9 display format.
Select the Ribbon color (black or blue), and the way negative results are presented (red or normal).
All three printer modes of the HP-91 are available:
- MAN
The printer only prints after tapping Print x or executing STK/REG.
- TRACE (called ALL on the HP-91)
The printer prints all entries, operations, and intermediate and final results.
- NORM
The printer prints entries and operations, but no intermediate and final results. Use Print x to print final results.
Display format changes, like FIX 2, are not printed.
The Up-arrow advances the paper tape by one line. Keep the key depressed for auto-repeat.
Swiping left across any line allows you to delete the line.
Use TXT to write arbitrary text on the paper tape. In addition, iOS 8 and later allows you to insert the text above any line, or to insert a blank line anywhere (swipe left across line to see these commands.)
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Background Image
Select one of 30 images, or use your own.
To install your own image or pattern:
- Save the image (.jpg or .png) to a location accessible by the iPad, e.g. iCloud Drive.
- Open the app Files on your iPad.
- Move the image to the RPN-45 HD folder.
- Quit and restart RPN-45 HD – your image is now available as "User" (number 0.)
- The image appears as userBg in the RPN-45 folder.
The original image may be deleted.
Note that images larger than 1400x1400 pixels are ignored.
Smaller images are repeated as often as required to fill the entire background area.
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Vintage HP-45
Press this button to cause the simulator to behave like the original HP-45. The navigation bar turns red as a warning that
the current user settings will be lost after saving. In addition, restarting the calculator will clear all memory.
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