RPN 28x Calc - Screen Shots

Math can be fun

iPad (low resolution)

RPN 28x Calc iPad screenshot with variable viewer using black and grey theme

This shows the calculator in the "black & grey" interface theme with the secondary button panel retracted. The (yellow) assistant view is expanded and lists all user-defined variables. You can store any type of operand: numbers, strings, lists, arrays and matrices, or programs.

RPN 28x Calc iPad TRIG 2π BIN screenwhot with error message using brown and sand theme

This example shows the "brown & sand" interface theme. The secondary button panel is open on the "TRIG" page, giving access to trigonometry and conversion commands. The "(2π)" in the display header indicates radians mode. "BIN" indicates that binary numbers are shown as binary. As you enter more values, the stack display expands. You can execute commands on selected levels; executing "SIN" on a string value, however, results in an error.

RPN 28x Calc iPad STAT OCT SCI screenshot while editing an operand

Here, the secondary panel shows the "STAT" page with statistics and programming commands. In the display header, the upright-bent arrow shows that the red shift button has been pressed. "OCT" indicates that binary numbers are shown as octals. "SCI" means that the scientrific number format is active.

RPN 28x Calc iPad BINARY HEX screenshot entering binary numbers

This shows the "BINARY" page with binary commands. In the display header, "HEX" indicates that binary numbers are shown as hexadecimals. Irrespective of the current binary number style, you can enter any style of binary number by postfixing the style suffix: b(inary), o(ctal), d(ecimal), or h(exadecimal).

RPN 28x Calc iPad BINARY HEX screenshot entering binary numbers

The 4 upper-most rows show output generated by the DISP (show on display) command. Tap on any of the output rows to dismiss the screen.
The secondary panel shows the "A-Z" page with access to letters and symbols.

RPN 28x Calc iPad row reordering screenshot

Upon pressing the "REORD" button, you can re-arrange the stack levels by dragging the row handles in the display. Press "DONE" when you are finished.

RPN 28x Calc iPad settings screenshot with sound and interface options

This shows the settings window which opens after pressing the white gear-styled button above the calculator display. Here you can modify sound and interface settings.

RPN 28x Calc iPad landscape screenshot

In landscape orientation, the stack display does not extend as far. Remember that you can swipe down in the display to scroll it. As is shown here, you can hide the assistant window to clean up the workspace (compare to the first screenshot above). Press the downward-facing arrow in the assistant window header to expand it again.

iPhone 8 (low resolution)

For screenshots for your device, take a look at the screenshots on the AppStore.

RPN 28x Calc iPhone screenshot using black and grey theme

The main screen for regular calculations, shown in the "black & grey" interface theme.

RPN 28x Calc iPhone TRIG 2π BIN screenshot with error message using brown and sand theme

This example shows the "brown & sand" interface theme. The button page was changed to the "TRIG" page. "(2π)" in the display indicates radians mode, "BIN" (binary) is the binary number style. Executing the SIN (sinus) command on a name like 'ABC' results in an error.

RPN 28x Calc iPhone STAT OCT screenshot

Here we see the "STAT" button page. "D:8" indicates that there are 8 stack levels in use; in the display, you see levels 1 to 6, and the value on level 1 is currently being edited in the lower-most line of the display. Binary numbers are shown in "OCT" (octal) number style. Real values are shown in "SCI" (scientific) format with 9 significant digits.

RPN 28x Calc iPhone BINARY HEX screenshot entering binary numbers

Now we see the the "BINARY" button page. There are now 10 values on the stack ("D:10"). "HEX" (hexadecimal) is now the binary number style. Binary numbers in other notations can be entered by adding the corresponding suffix: b(inary), o(ctal), d(ecimal), or h(exadecimal).

RPN 28x Calc iPhone DIP screenshot displaying custom output

The upper-most 4 rows show output generated by the DISP (show on display) command. Tap on the output rows to dismiss the screen.

RPN 28x Calc iPhone row reordering screenshot

Upon pressing the "REORD" button, you can re-arrange the stack levels by dragging the row handles in the display. Press "DONE" when you are finished.

RPN 28x Calc iPhone settings screenshot with sound and interface options

This shows the settings window where you can modify sound and interface settings.

RPN 28x Calc iPhone landscape screenshot

In landscape orientation, a different button layout needs to be used to make use of the available space.