The IBM 5100 is the first portable computer, which was released on September 1975. The computer weighed 55 pounds and had a five inch CRT display, tape drive, 1.9MHz PALM processor, and 64KB of RAM.
The IBM PC Division (PCD) later released the IBM portable in 1984, it’s first portable computer that weighed in at 30 pounds. Later in 1986, IBM PCD announced it’s first laptop computer, the PC Convertible, weighing 12 pounds. Finally, in 1994, IBM introduced the IBM ThinkPad 775CD, the first notebook with an integrated CD-ROM.
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