History of keyboards

1. Keyboards History Changes

2. History of the keyboard 1872, Remington produced the first mechanical typewriter, patented by C. Latham Sholes. Soon typists were going so fast that they were able to jam the keys which flew up to hit the typewriter ribbon. In the late 1870's: the "improved" Qwerty layout was designed to slow down typing, so those pesky keys would not jam anymore. Here is the speed trap we are stuck with today, 130 years later.

3. Changes in keyboards – Membrane keyboards Membrane keyboards are usually flat. They are most often found on appliances like microwave ovens or photocopiers. A common design consists of three layers. The top layer (and the one the user touches) has the labels printed on its front and conductive stripes printed on the back. Under this it has a spacer layer, which holds the front and back layer apart so that they do not normally make electrical contact.

4. Dome Switch keyboards Dome switch keyboards are a hybrid of membrane and mechanical keyboards. They bring two circuit board traces together under a rubber or silicone keypad using either metal "dome" switches or polyester formed domes. The metal dome switches are formed pieces of stainless steel that, when compressed, give the user a crisp, positive tactile feedback.