Atari 8-bit home computers

In the ending of 70’s a new family of home computers was introduced by Atari in the backwater of the videogame console Atari 2600 (from 1977). Because of the early 80’s recession this family of home computers are often forgotten and less common then Commodore computers like VIC-20. If you ever have used one you recognize solutions like the top slot for catridge games.