SRAM - Static Random Access Memory.
S-Reset - Soft Reset, a reset state for a CPU which can be commanded by an application program.
Stack Segment - a segment of memory allocated for a thread which provides buffer space for function arguments and local variables - each application thread, the kernel thread, ISRs, and signal handlers typically all have their own stack space for the purpose of parameter passing and local variable instantiation.
State Machine - a formal design notation which includes a start state, state transitions driven by inputs made while in a specific state, and outputs on transitions.
Static Priority Stereo Vision - the use of two cameras separated by a known constant distance to judge distances to objects of unknown physical dimensions through the use of triangulation.
Stress Testing - test vectors which are designed to stress the system by going beyond the requirements-based specification for limits - e.g. commanding at high rate, exposure to high voltage ESD, shock testing, and thermal cycling.