The Atari 800 came a bit later (1979), the 3 discussed all were introduced in 1977. 1979 was also when the TI-99/4 came out which eventually became popular whe

The Atari 800 came a bit later (1979), the 3 discussed all were introduced in 1977. 1979 was also when the TI-99/4 came out which eventually became popular when the price was dropped below cost.