NBC Universal has inked a deal with Apple Computer Inc. to become the second network to sell television shows a la carte on Apple’s online iTunes store, the companies announced Tuesday.

More than 300 episodes from about a dozen prime time, cable, late-night and classic TV shows are now available for $1.99 apiece, viewable on computers or downloadable on the latest, video-capable iPod.

The programming spans from the 1950s to the present, including shows from “Alfred Hitchcock Presents” to NBC’s hit series “Law & Order.”

Sketches from “The Tonight Show with Jay Leno” and “Late Night with Conan O’Brien” are also for sale.