Safety device for manually operable code generation
Sample isolation in integrating analog-to-digital converters
Sampled signal generation circuit
Sampling frequency conversion device
Sampling frequency converting apparatus
Scale switchable digital-to-analog converter
Scaled analog to digital coverter
Scan control for light beam position indicator
Scan signal processing system
Scan-controlled keyboard
Scanning system for digital-analog converter
Schmitt trigger loud alarm with feedback
Seat belt status alerting unit
Secure input system
Secure keyboard input terminal
Security alarm system
Security alarm system with audio monitoring capability
Security apparatus with audible alarm of enhanced urgency
Security interlock switch system for smoke detectors and the lik
Segment digital/analogue converter