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Acorn Archimedes A420
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== Overview == The A420/1 was introduced in 1989 alongside the A410/1 and A440/1, replacing the earlier 400 series models . The A420/1 was priced at ยฃ1,699 excluding VAT . The A420/1 differed from the A410/1 only in having 2MB RAM installed instead of 1MB and included a 20MB ST506 hard disc . The range consisted of the A410/1 with 1MB RAM and a floppy disc drive, the A420/1 with 2MB RAM, a 20MB ST506 hard disc and floppy disc drive, and the A440/1 with 4MB RAM and a 50MB ST506 hard disc and floppy disc drive .
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