Full 104-Key Keyboard & NKRO Test
Press any keys on your keyboard to test switches, inspect the complete CSS Grid Numpad cluster, measure simultaneous rollover (NKRO), and check for matrix ghosting.
Full 104-Key Layout & NKRO Rollover Explained
Learn how full Numpad keyboards process multi-key matrix scanning and prevent ghosting.
What is True NKRO?
Full N-Key Rollover means every single switch has its own dedicated SMD diode, allowing every key to register independently without blocking limits.
104-Key Numpad Architecture
Dedicated Numpads send distinct scan codes (Numpad0 vs Digit0). This distinction is critical for numeric data entry, CAD shortcuts, and blender camera views.
Ghosting Detection Test
Hold both Shift keys and type: THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG. If any letter fails, your matrix is jamming on multi-key combinations.
Frequently Asked Questions
A full 104-key ANSI keyboard includes the dedicated 17-key numeric keypad on the right. An 87-key Tenkeyless (TKL) keyboard removes the Numpad for a more compact footprint and increased desk space for mouse movement.
Certain OS/Browser hotkeys (like Ctrl+W, Ctrl+N, F5) have protected native browser actions. Our script calls event.preventDefault() on standard function keys, but browser security may retain focus on system shortcuts.