At the Waldorf Astoria Hotel in New York City on August 12, 1981 IBM presented the  5150. At a price tag of  $1,565 ($3,704.77 today with inflation) this system included: 5.25-inch floppy drives or a tape drive 4.77 MHz Intel 8088 Processor 16 KB of RAM (expandable to 256 KB) PC-DOS 1.0 More at the Seattle PI