coulour TV games

Playing games like tennis on a TV screen has become quite popular, and several manufacturers supply suitable integrated circuits. Regrettably, most of these ICs suffer from one drawback: built-in obsolescence! In a competitive market every manufacturer is bent on outdoing his competitor, either by offering a chip that will do the same job cheaper or by designing a chip that will offer more features for the same price: more games, on-screen scoring, sound, colour, ... National Semiconductor have recently introduced a novel solution to this problem: a family of pin-compatible ICs, offering on-screen scoring, sound and colour (either NTSC or PAL), some interesting handicap features, and a growing number of games. This means that the same circuit and printed circuit board can be used with more versatile chips when they become available.