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IBM's first laptop computer in 1986 was also the first machine by the company to use 3.5-inch floppy discs.
Sales of the PC Convertible were poor, as it was hampered by a hard to read and oddly shaped LCD screen, did not feature PC serial and parallel ports and was not much faster than the Portable model that it replaced.
The £1,800 machine ran at 4.77MHz and had 256KB of memory.
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