A few other stations will be off the air temporarily, available only through cable and satellite. In Syracuse, N.Y., NBC affiliate WSTM shut down both analog and digital signals at midnight.

<P>This chapter introduces signals and the mathematical tools needed to work with them, and combines discussions of analog signals, discrete signals, digital signals and the methods to transition from ...

They'll become useless after Feb. 17, when broadcasters must abandon analog and just transmit digital signals — unless the sets are connected to digital-to-analog converter boxes.

Ksimus is a circuit simulator that allows you to build digital and analog circuits with discrete components and simulate them in real time. Ksimus does have its limitations though. Ksimus doesn't ...

(AP) -- The last major TV stations that are still broadcasting in analog will turn those signals off Friday and go all digital. And this time, they really mean it.