COMPUTER KEYBOARD Russian patent published in 2012 - IPC G06F3/02 

FIELD: information technology.

SUBSTANCE: computer keyboard has a housing and control buttons, wherein said keyboard has two sets of buttons on the top and bottom sides of the housing, and also has pendulum switch inside in form of a horizontal arm with a load at the end. In the computer keyboard, certain buttons are closed by spring-loaded transparent covers or opaque covers with the same symbol as the button. The computer keyboard also has one or two pairs of horizontal cross axes with elastic wheels lying such that the sheet of paper held in the wheels lies at an angle of 40-89 degrees to the horizontal, wherein one of the axes has a handle for turning with fingers.

EFFECT: increasing the number of keys due to an additional set of buttons on the bottom side of the housing in order to reduce the number errors when entering information, enabling automatic switching of that set of buttons which faces upwards, preventing accidental pressing of keys, enabling ergonomic change of the position of the sheet of the rough copy.

6 cl, 3 dwg