| operator | time (sec) |
|---|---|
| K: keystroke | .08 (135 wpm: best typist) |
| .12 (90 wpm: good typist) | |
| .20 (55 wpm: average skilled typist) | |
| .28 (40 wpm: average non-secretary typist) | |
| .50 (typing random letters) | |
| .75 (typing complex codes) | |
| 1.20 (worst typist and unfamiliar with the keyboard) | |
| P: point on element on screen | 1.1 |
| H: homing the hand(s) on the keyboard or other device | 0.4 |
| M: mental preperation | 1.35 |
| R: system response time | system dependent |
| B: press or release mouse button | 0.1 |
| S: scan for content | 2.29 |
| Combined operators: | |
| Click a Link/ Button | 3.73 |
| Pull-Down List (No Page Load) | 3.04 |
| Pull-Down List (Page Load) | 3.96 |
| Date-Picker | 6.81 |
| Cut & Paste (Keyboard) | 4.51 |
| Typing Text in a Text Field | 2.32 |
| Scrolling | 3.96 |
| Mobile operators: | |
| I: icon pointing from home position | 0.08 |
| U: short untargeted swipe | 0.07 |
| Z: screen zoom | 0.2 |
Last active
October 5, 2023 15:49
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KLM Cheat Sheet
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