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Optical switch technology was introduced in 1962 by Harley E. Kelchner for use in a typewriter machine with the purpose of reducing the noise generated by typewriter keys. An optical keyboard technology utilizes light-emitting devices and photo sensors to optically detect actuated keys.
Commonly used mechanical switches on pre-built keyboards ... Purple (Optical Switch) [16] Cherry MX Blue: Clicky: 0.45 N: N/A: 1.5 mm: 100 million Logitech: Kailh:
Mechanical keyboards (or mechanical-switch keyboards) are computer keyboards which have an individual switch for each key. The following table is a compilation list of mechanical keyboard models, brands, and series:
There are various switch technologies used in modern keyboards, such as mechanical switches (which use springs), scissor switches (usually found on a laptop keyboard), or a membrane. Other keyboards do not have physical keys, such as a virtual keyboard, or a projection keyboard. Ergonomic keyboard
A computer keyboard is a typewriter-style device which uses an arrangement of buttons or keys to act as mechanical levers or electronic switches.Each button typically represents one character, but some symbols may only be accessible via a combination of buttons.
Keyboard with some keytops removed to show the Cherry MX "Black" switches it is based on. MX switches are a common choice for mechanical keyboards. The tactile, non-clicky "brown" version of the Cherry MX switch shown in disassembled form (four parts, left and centre), with the top off (top right) and reassembled (bottom right)
The earliest name was Keyboard Video Switch (KVS). [2] With the advent of the mouse, the Keyboard, Video and Mouse (KVM) switch became popular. The name was introduced by Remigius Shatas, the founder of Cybex (now Vertiv), a peripheral switch manufacturer, in 1995. [3] Some companies call their switches Keyboard, Video, Mouse and Peripheral (KVMP).
Microoptoelectromechanical systems (MOEMS), also known as optical MEMS, are integrations of mechanical, optical, and electrical systems that involve sensing or manipulating optical signals at a very small size. MOEMS includes a wide variety of devices, for example optical switch, optical cross-connect, tunable VCSEL, microbolometers.