Make-It-Yourself projects
Electronics Australia, may 1976

This article features an interesting project designed with TTL chips of the 74xx family, which plays a two-player game with variants. The most common variant is the inversion a paddle to obtain a vertical line with a hole. Rarer is wobble effect on a player to increase the game difficulty. Another unique optional interaction between both players makes a player move slightly when the other moves his paddle as usual. By combining these options, 32 variatons of the Tennis game can be played. More games can be imagined by placing one or two holes at specific locations. For example, Basketball (solo) is obtained by inverting the second player and placing its hole on the top.

Click the photos to view in large scale. Larger images of the circuit board layout and implementation are given for those who want to build the project.

Page 38	Page 39	Page 41
If you want to build the game, you will want to view larger versions of the circuit board and its implementation layout as seen on pages 41 and 45 respectively.	Page 43	Page 45
Page 46	Page 47	Page 49

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