File talk:Original AT motherboard.jpg

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This is the second revision of the original IBM PC which contains 4 banks of 64KB of RAM bringing up to total of 256KB maximum on board memory. Adding a 256KB for a card and another 128KB of RAM on another card bringing up to total of 640KB of RAM maximum. Rjluna2 (talk) 03:19, 7 November 2013 (UTC)[回覆]

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