Trident Help

RPN Power 48 manual · Chapter 2 of 19

Keyboard reference

Every key: its plain function, its left-shift and right-shift functions, and the letter it types in alpha mode.

2.1How to read the key tables#

Each table has five columns: the key, what it does on its own, what it does after the left shift ◀, what it does after the right shift ▶, and the letter it types in alpha mode. A dash means the key has no function in that layer. The shifted functions on the key face are shown in two colours: left function first, right function second.

2.2Top row: the soft keys#

The six soft keys under the display. The display shows: RAD                      { HOME } / 6: / 5: / 4: / 3: / 2: / 1:.
The six soft keys under the display.
KeyPrimaryLeft shiftRight shiftAlpha
F1Runs the first menu label.In the VAR menu: stores level 2 in that variable.In the VAR menu: recalls that variable.A
F2Second label.As F1 in VAR.As F1 in VAR.B
F3Third label.As F1 in VAR.As F1 in VAR.C
F4Fourth label.As F1 in VAR.As F1 in VAR.D
F5Fifth label.As F1 in VAR.As F1 in VAR.E
F6Sixth label.As F1 in VAR.As F1 in VAR.F

2.4Third row: HIST, EVAL, quote, square root, cursor keys#

HIST, EVAL, quote and the square-root key, with the left and up arrows. The display shows: RAD                      { HOME } / 6: / 5: / 4: / 3: / 2: / 1:.
HIST, EVAL, quote and the square-root key, with the left and up arrows.
KeyPrimaryLeft shiftRight shiftAlpha
HISTBrings back earlier command lines, one at a time.UNDO: restores the stack as it was before the last action.LASTARG: puts back the arguments of the last command.M
EVALEVAL: evaluates level 1.→NUM: converts level 1 to a decimal number.∂: derivative with respect to a variable.N
'Types a pair of single quotes.SYMB menu.∫: definite integral.O
√xSquare root.Square.XROOT: the x-th root of y.P
◀Moves the cursor left.Cursor to start of line.Cursor to start of line.—
▲Moves the cursor up a row.Cursor to start of line.——

2.5Fourth row: SIN, COS, TAN, power, cursor keys#

The trigonometric keys, the power key and the down and right arrows. The display shows: RAD                      { HOME } / 6: / 5: / 4: / 3: / 2: / 1:.
The trigonometric keys, the power key and the down and right arrows.
KeyPrimaryLeft shiftRight shiftAlpha
SINSine.Inverse sine.LOG: logarithm base 10.Q
COSCosine.Inverse cosine.ALOG: 10 to the power x.R
TANTangent.Inverse tangent.Pushes pi.S
yˣRaises level 2 to the power in level 1.EXP: e to the power x.LN: natural logarithm.T
▼Moves the cursor down; with no command line, edits level 1.Cursor to end of line.——
▶Moves the cursor right.Cursor to end of line.Steps over the next closing bracket.—

2.6Fifth row: ENTER, +/−, EEX, DEL, backspace#

ENTER and the editing keys. The display shows: RAD                      { HOME } / 6: / 5: / 4: / 3: / 2: / 1:.
ENTER and the editing keys.
KeyPrimaryLeft shiftRight shiftAlpha
ENTEREnters the command line; on an empty line copies level 1.Types an arrow for local variables.EDIT: opens level 1 in the command line.—
+/−Changes the sign of the number being typed, or of level 1.Types an equals sign.Types a not-equal sign.U
EEXTypes the exponent marker E.Types # for a binary integer.Types a colon (tags).V
DELDeletes the character to the right of the cursor.CLEAR: empties the stack.—W
←Deletes the character to the left; with no command line, drops level 1.Deletes to the right.——

2.7Sixth and seventh rows: alpha, 7 8 9, shift, 4 5 6#

The upper digits, the divide and multiply keys, alpha and the left shift. The display shows: RAD                      { HOME } / 6: / 5: / 4: / 3: / 2: / 1:.
The upper digits, the divide and multiply keys, alpha and the left shift.
KeyPrimaryLeft shiftRight shiftAlpha
αAlpha mode: once for one letter, twice to lock, a third time to turn off.———
7Digit 7.Types « » program brackets.Types string quotes.—
8Digit 8.Types { } list braces.Types ( ) parentheses.—
9Digit 9.Types [ ] matrix brackets.Types a comma.—
÷Divides level 2 by level 1.INV: reciprocal.MOD: remainder.X
◀Left shift.——Lowercase letter in alpha mode.
4Digit 4.Types <.Types ≤.—
5Digit 5.Types >.Types ≥.—
6Digit 6.Types == (test equal).SAME: tests if two objects are identical.—
×Multiplies level 2 by level 1.ABS: absolute value or magnitude.%: percent.Y

2.8Eighth and ninth rows: right shift, 1 2 3, ON, 0, point, space, plus#

The lower digits and the bottom row. The display shows: RAD                      { HOME } / 6: / 5: / 4: / 3: / 2: / 1:.
The lower digits and the bottom row.
KeyPrimaryLeft shiftRight shiftAlpha
▶Right shift.———
1Digit 1.R→C: builds a complex number.C→R: splits a complex number.—
2Digit 2.Pushes the imaginary unit i.Pushes e.—
3Digit 3.!: factorial.ΣLIST: sum of a list.—
−Subtracts level 1 from level 2.Types ( ).NEG: changes the sign.Z
ONCancels the command line and alpha mode.———
0Digit 0.DEPTH: counts the stack.SWAP: swaps levels 1 and 2.—
.Decimal point.Types a comma.——
SPCTypes a space.Types an underscore.——
+Adds level 1 to level 2.ADD: adds two lists element by element.ΠLIST: product of a list.—

2.9All shifted menus at a glance#

F1F2F3F4F5F6APPS1MODE2TOOL3VAR4STO▶NXT5HISTEVAL'6√xSINCOSTANyˣENTER+/−EEXDEL←α789÷◀456×▶123−ON0.SPC+▲▼◀▶
  1. APPS MTH / CPLX
  2. MODE PRG / TEST
  3. TOOL STACK / LIST
  4. VAR MATRX / STR
  5. NXT PREV / BASE
  6. ' SYMB / ∫
Keys that open a menu with the left shift (top) or right shift.

HP 48 and HP 50g is a trademark of HP Inc.. Trident Calculator is an independent product by South View Studios and is not affiliated with, sponsored by or endorsed by HP. The name is used only to describe the kind of calculator this model resembles; Trident's names, keys, display, fonts and software are its own clean-room design.