Editing Keyboard technology (section)

==== Flat-panel membrane ====
[[File:Atari 400 keyboard.jpg|thumb|Atari 400 keyboard]]
Flat-panel membrane keyboards are often used in harsh environments where water or leak-proofing is desirable. They can have non-tactile, polydome tactile and metal dome tactile keys. Polydome tactile membrane switches use polyester, or PET, and is formed to create a stiff plastic dome.  When the stiff polydome is pressed, the conductive ink on the back of the polydome connects with the bottom layer of the circuit. Metal dome membrane switches are made of stainless steel and offer enhanced durability and reliability and can feature custom dome designs.<ref>{{cite web | url=http://www.dotkeys.in/membrane-keyboards.html | title=Dotkeys &#124; Membrane Switches }}</ref> Non-tactile flat-panel membrane keyboards have little to no keypress feel and often issue a beep or flash of light on actuation.

Although this keyboard design was commonly used in the early days of the [[personal computer]] (on the [[Sinclair ZX80]], [[ZX81]], and [[Atari 400]]), they have been supplanted by more responsive and modern designs.