Glossary
Mechanical keyboard terminology, defined plainly — the switch, layout, and build vocabulary you need to read any comparison without guessing.
#
- 60% layout
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Alphanumeric block only, no arrows or function row — about 61 keys. Maximum compactness; navigation moves to a function (Fn) layer.
See also: 65%, Layer (Fn layer)
- 65% layout
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Drops the function row but keeps dedicated arrow keys and a few nav keys — about 68 keys. A popular balance of compactness and usability.
- 75% layout
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A compact layout that keeps the function row and arrows but tightens spacing and merges the nav cluster into a column. Near-TKL function in a much smaller footprint.
See also: Tenkeyless (TKL / 80%), 65%
A
- ABS components
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A common keycap plastic — smoother and often thinner than PBT, and prone to developing a shine where fingers contact it. Inexpensive and capable of vivid colors and doubleshot legends.
- Actuation force switches
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The force, in grams-force (gf), needed to register a keypress. Lighter switches (~35–45 gf) reduce finger fatigue; heavier ones (~60–70 gf) resist accidental presses. A preference, not a quality measure.
See also: Linear switch, Tactile switch
C
- Clicky switch switches
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A tactile switch that also produces a distinct click sound at actuation, usually via a click jacket or click bar. Cherry MX Blue is the classic example. Loud — a poor choice for shared spaces.
See also: Tactile switch, Linear switch
F
- Full-size (100%) layout
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A layout with the alphanumeric block, function row, navigation cluster, and a dedicated numpad — roughly 104 keys. Maximum functionality, maximum desk footprint.
See also: Tenkeyless (TKL / 80%), 75%, 65%, 60%
G
- Gasket mount build
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A mounting style where the plate/PCB assembly is suspended between gasket strips rather than screwed to the case, giving a softer, more cushioned typing feel. Popular in enthusiast boards.
See also: Tray mount, PCB
H
K
- Keycaps components
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The removable caps you press, defined by material (PBT, ABS), profile (Cherry, OEM, SA, etc.), and legend method. They change a board's sound, feel, and longevity more than most buyers expect.
See also: PBT, ABS, Stabilizers
L
- Layer (Fn layer) layout
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A secondary set of key functions accessed by holding a modifier (usually Fn). Compact boards rely on layers to provide arrows, F-keys, and media controls.
- Linear switch switches
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A switch with smooth, consistent travel and no tactile bump or click. Favored for fast typing and gaming. Cherry MX Red and Gateron Red are common examples.
See also: Tactile switch, Clicky switch, Actuation force
- Lubing components
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Applying lubricant to switch housings, stems, springs, and stabilizers to reduce scratch and rattle and smooth the keypress. The single most common enthusiast mod.
See also: Stabilizers, Linear switch
P
- PBT components
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A dense, durable keycap plastic with a slightly textured surface that resists shine. Generally preferred over ABS for longevity, at a higher cost.
- PCB build
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The printed circuit board that registers keypresses. Determines hot-swap support, layout options, RGB, and wireless capability.
- Polling rate firmware
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How often the keyboard reports its state to the computer, in Hz. 1000 Hz (1 ms) is standard; higher rates exist but offer diminishing real-world benefit for typing.
See also: Wireless (2.4 GHz vs Bluetooth)
Q
- QMK / VIA firmware
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Open-source keyboard firmware (QMK) and its companion GUI configurator (VIA) for remapping keys, building layers, and creating macros without recompiling. Strong support is a real buying differentiator.
See also: Layer (Fn layer)
S
T
- Tactile switch switches
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A switch with a noticeable bump partway through the keypress signalling actuation, without an audible click. Cherry MX Brown is the archetype; many enthusiast tactiles have a sharper bump.
See also: Linear switch, Clicky switch
- Tenkeyless (TKL / 80%) layout
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Full-size minus the numpad — about 87 keys. Keeps the function row and nav cluster while freeing desk and mouse space. A common ergonomic compromise.
See also: Full-size (100%), 75%
- Tray mount build
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The most common budget mounting style: the PCB screws into posts in the case bottom. Simple and cheap, but can feel uneven across the board depending on post placement.
See also: Gasket mount
W
- Wireless (2.4 GHz vs Bluetooth) connectivity
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2.4 GHz dongles offer near-wired latency and are best for gaming; Bluetooth is more convenient for multi-device use with slightly higher latency. Many boards support both plus wired.
See also: Polling rate