Tablet computer

A computer comprising

• a computer component;
• a keyboard component removably connected with the computer component, the keyboard component weighing less than the computer component and comprising a rotating tension hinge having a first engagement surface;
• and
• a counterbalance armature attached to the keyboard component wherein the counterbalance armature is retractable with respect to the keyboard component and defines a second engagement surface and when the counterbalance armature is in a retracted position, the first surface interfaces with the second surface and prevents the computer component from being manipulated from a closed position to an open position.

A method comprising:

• opening a computer component containing computer hardware with respect to a removably connected keyboard component lying in a plane, the keyboard component weighing less than the computer component, wherein the keyboard further comprises a rotating tension hinge having a first engagement surface;
• extending a counterbalance armature with a second engagement surface retractably attached to the keyboard component, the counterbalance armature extending from the keyboard component along the plane when the computer component is connected with and in an open position with respect to the keyboard component;
• and
• interfacing the first engagement surface with the second engagement surface to prevent the computer component from being manipulated from a closed position to the open position.