Complex sentence: The A7000 and A7000 + were Acorn Computers's entry level computer based on the Risc PC architecture, launched in 1995 is superseded some of the models of the Acorn Archimedes range.
Split into simpler sentences: The A7000 and A7000 + were Acorn Computers's entry level computer based on the Risc PC architecture. Launched in 1995, they replaced some of the models of the Acorn Archimedes range.