Complex sentence: Although less expensive than the Texas Instruments TI-99/4A and Commodore VIC-20, the Aquarius had comparatively weak graphics and limited memory--internally, Mattel programmers dubbed it "the system for the seventies".
Split into simpler sentences: Although less expensive than the Texas Instruments TI-99/4A and Commodore VIC-20, the Aquarius had comparatively weak graphics and limited memory. Internally, Mattel programmers dubbed it "the system for the seventies".