Discrete-time signal and Digital Signal digital signal:signal values are quantized,in binary representation, time is discrete discrete-time signal:time is discrete,signal value is continuous Discrete-time signal:sin(0.1TT n) 0.75 0.5 infinite-precision signal values 0.25 兰02 0.5 sin(0.lπm) -0.75 7 0 8 8 2 0 6 8 10 n digital signal Digtal signal:0.25*round(4sin(0.1TT n)) 0.75 0.5 finite-precision signal values 0.25 0 -0.25 -0.5 0.25round(4sin(0.1an)) -0.75 -1 -10 -8 -6 -2 0 2 6 8 10 signal values are only one of(-1,-0.75,-0.5,-0.25,0,0.25,0.5, 0.75,1),when signal value is presented by 3-bit binary numbe22/10/1 9 82022/10/1 9 8 Discrete-time signal and Digital Signal digital signal: signal values are quantized, in binary representation, time is discrete sin(0.1 ) n 0.25 (4sin(0.1 )) round n  infinite-precision signal values finite-precision signal values discrete-time signal: time is discrete, signal value is continuous digital signal signal values are only one of (-1, -0.75, -0.5, -0.25, 0, 0.25, 0.5, 0.75,1), when signal value is presented by 3-bit binary number