Trident HelpOpen the calculator

Using the app

Type with your computer keyboard

On a computer, tablet keyboard or Chromebook, you can type numbers, operators and common functions instead of tapping the keys.

Open in Trident

The calculator listens to your keyboard. Each key you press is turned into a press of the matching calculator key, and the key flashes on screen so you can see which one it was.

  1. Click away from any text box and just start typing. The digits 0–9, ., +, -, *, / and ^ work, as do ( and ).
  2. Press Enter to calculate (it acts as the equals or enter key of the model). Backspace deletes, and Escape clears.
  3. The arrow keys move the cursor, or the pointer on menus, graphs and tables.
  4. Letters are shortcuts for common functions. On the Classic and Natural scientific and graphing models, s, c and t give sin, cos and tan, q gives the square key, and r gives the square root. Where there are both log and ln, the letters l and n (Classic Graphing 84) or l and L (Natural models) choose between them. The letter x types the variable X.
  5. On the RPN models, s swaps the top two numbers, r rolls the stack down and e enters an exponent. On RPN Scientific 15 and RPN Advanced 42, n changes the sign.
  6. On the Natural models an uppercase S presses shift and an uppercase A presses alpha for the next key. Each model also has a few shortcuts of its own, so try a key to see what it does.
  7. Ctrl+Enter gives an approximate (decimal) result on the symbolic algebra model.

Tips

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