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The 501 is built on a 'building block' idea which permits it to be highly versatile for many different makes use of and could concurrently management up to sixty three tape drives—very useful for big databases of knowledge. For many enterprise customers, quick entry to this large storage capability outweighed its relatively gradual processing speed. At MIT, researchers begin experimenting with direct keyboard enter to computer systems, a precursor to today´s normal mode of operation. Typically, computer users of the time fed their programs into a computer utilizing punched playing cards or paper tape. Ross contended that a Flexowriter -- an electrically-controlled typewriter -- linked to an MIT pc might perform as a keyboard enter system because of its low cost and suppleness. The Macintosh Portable was heavy, weighing sixteen kilos, and costly (US$6,500). Sales have been weaker than projected, despite being broadly praised by the press for its energetic matrix display, de