Flexible membrane keyboard

A flexible computer keyboard comprising:

• a pair of overlying upper and lower flexible plastic membranes;
• a plurality of discrete self-contained pressure sensitive switches each enclosed in a housing having at least a flexible upper surface for operator activation;
• each of the switches being embedded between but otherwise independent of said flexible plastic membranes and comprising an individual key of the keyboard;
• each of said discrete self-contained pressure sensitive switches adapted for actuation by engagement thereof through said flexible upper surface to generate a predetermined output;
• a microprocessor connected to each of said discrete self-contained pressure sensitive switches for generating a keyboard output representative of the particular discrete self-contained switch or group of discrete self-contained switches that is actuated at a particular time;
• at least one of the flexible membranes being relieved to provide plurality of interior cavities each for receiving one of said discrete self-contained switches;
• the upper surface of the upper flexible membrane comprising a plurality of raised portions aligned with each corresponding discrete self-contained switch.