Math can be fun
iPad (low resolution)
This shows the calculator in the "black & grey" interface theme with the secondary button panel retracted. The (yellow) assistant view is expanded and lists the catalogue of scientific units and constants.
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 integers 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.
Beginning with iPadOS 13, you can switch the interface colors to a dark appearance. 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 integers are shown as octals. "SCI" means that the scientific number format is active.
This shows the "BINARY" page with binary commands, again in the dark appearance. In the display header, "HEX" indicates that binary integers are shown as hexadecimals. Irrespective of the current binary number style, you can enter a binary integer in any style by postfixing the style suffix: b(inary), o(ctal), d(ecimal), or h(exadecimal).
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.
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.
The side panel shows the USER page with
some example buttons. Use these for your own programs.
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. Note that you can select your preferred appearance color.
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.
The main screen for regular calculations, shown in the "black & grey" interface theme.
The same screen when using the dark appearance that is available since iOS 13.
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.
Here we see the "STAT" button page. "D:9" indicates that there are 9 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. "OCT" indicates that binary numbers are shown in the octal number style. Real values are shown in "SCI" (scientific) format, here with 9 significant digits.
Now we see the "BINARY" button page in the dark appearance. There are now 11 values on the stack ("D:11"). "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).
The upper-most 4 rows show output generated by the DISP (show on display) command. Tap on the output rows to dismiss the screen.
Pressing the top-left "ear" page button opens and closes the assistant viewer where the log, variables and the catalogue of scientific units can be inspected. Pressing the arrow on the top right caused this window to be resized to the full height of the screen.
Upon pressing the "REORD" button (on the main page),
you can re-arrange the stack levels by dragging the row handles in the display.
Press "DONE" (on the main page) when you are finished.
Below we see the USER
page with some example buttons. Use these for your own programs.
This shows the settings window where you can modify sound and interface settings. Note that you can select your preferred appearance color (further down on the settings screen).
In landscape orientation, a different button layout needs to be used to make use of the available space.