Reversible keyboard and information processor
Rotary controller for electrical or electronic apparatuses
Rotary knob structure
Rounded keypad
Rubber membrane used in a computer keyboard
Scan circuit and method for keyboard
Scanned switch matrix
Scanning optical keyboard
Scanning, row-column type keyboard
Seal membrane with integral microphone support
Secure keyboard with random order of key interrogation
Secure keypad scanning
Security keyboard matrix scanning method
Security system transmitter with opposed concave actuators
Segmented gain controller
Selective call radio with contraposed touchpad
Self-powered switch initiation system
Self-powered switching device
Self-scan programmable keypad interface
Sensing keys for keyboard