Much of the technology in the Atari 8-bit family of home computer systems was originally developed as a second-generation games console intended to replace the 2600. However, as the system was reaching completion, the personal computer revolution was starting with the release of machines like the Commodore PET, TRS-80 and Apple II. These machines had less advanced hardware than the new Atari technology, but sold for much higher prices with associated higher profit margins. Atari's management decided to enter this market, and the technology was repackaged into the Atari 400 and 800. The chipset used in these machines was created with the mindset that the 2600 would likely be obsolete by the 1980 time frame.