Enter the numbers first, then the operation. 2 ENTER 3 + gives 5. For (3 + 4) × 5, press 3 ENTER 4 + 5 ×. You never need brackets or an equals key.
ENTER copies X into Y. An operation uses X and Y, and the stack drops: Z moves to Y, and T is copied into Z. Gold labels are second functions: press SHIFT, then the key.
To store, press STO then a digit 0–9. RCL then a digit recalls it. Click the display to copy X. Your stack and memories are kept between visits.
MODE: STD, FIX n, SCI n and ENG n (press the key, then a digit) and DEG/RAD. STAT: Σ+ adds X to the statistics; x̄ is the mean, s the standard deviation. BASE and LOGIC: HEX/DEC/OCT/BIN integer modes (32-bit) with AND, OR, XOR, NOT and shifts; type A–F with the extra row or the keyboard.
PRGM: press P/R and every key you press is recorded instead of run. Press P/R again to stop, then R/S runs the program. LBL n and GTO n make loops. SHIFT gives the tests x≠0?, x=0?, x≤y? and x>y?; a false test skips the next step. R/S inside a program stops it. DEL removes the last step and SHIFT P/R clears the program.
| 0–9 . | digits |
| Enter | ENTER |
| + - * / ^ % | arithmetic, yx, percent |
| Backspace | delete digit / CLX |
| Esc | CLX (cancel STO/RCL) |
| Delete | clear everything |
| n / e | CHS / EEX |
| s r l | x↔y, R↓, LAST x |
| q i p | √x, 1/x, π |
| Shift Tab / f | SHIFT |
| Ctrl+Z | undo |
| Ctrl+C / V | copy X / paste a number |