Continuous-time and Discrete-time signal continuous-time Signal:time and signal are continuous Continuous-time signal:sin(0.1Tt) 0.5 0 -0.5 sin(0.lπt) -10 8 6 -4 2 0 2 4 6 10 infinite-precision of signal value and time Discrete-time signal:time is discrete,signal value is continuous Discrete-time signal:sin(0.1Tr n) 1 0.75 0.5 0.25 0 -0.25 -0.5 sin(0.lπn) -0.75 八7 -10 8 6 -2 0 2 4 6 8 10 infinite-precision of signal value,finite-precision of signal value 2022/10/1 8 82022/10/1 8 8 Continuous-time and Discrete-time signal sin(0.1 ) t sin(0.1 ) n continuous-time Signal: time and signal are continuous infinite-precision of signal value and time infinite-precision of signal value, finite-precision of signal value Discrete-time signal: time is discrete, signal value is continuous