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Signals CT Even functions Odd Functions
Systems CT(Analog Clock) DT(Digital Clock) Hybrid both CT & DT Properties Property 1 Property 2 Static(memoryless) Dynamic(memory) Causal Noncausal
A system is static (memoryless) if its output at any arbitrary time depends on the input at exactly the same time.
A system which has memory (i.e., it is not memoryless) is a dynamic system.
A system is causal if the output at any time t1 (n1) depends on values of the input at t In other words, a system is causal if its output is generated during or after the application of input and not before! Causal systems are also called non-anticipatory. A system which is not causal is called noncausal.
EE222
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