Source 1 X is a website dedicated for you to understand a little more about Laptops.

Alan Kay of the Xerox Palo Alto Research Center originated the idea of a portable computer in the 1970s. Kay envisioned a notebook-sized, portable computer called the Dynabook that everyone could own, and that could handle all of the user's informational needs. Kay also envisioned the Dynabook with wireless network capabilities. Arguably, the first laptop computer was designed in 1979 by William Moggridge of Grid Systems Corp. It had 340 kilobytes of bubble memory, a die-cast magnesium case and a folding electroluminescent graphics display screen. In 1983, Gavilan Computer produced a laptop computer with the following features:

• 64 kilobytes (expandable to 128 kilobytes) of random access memory (RAM)
• Gavilan operating system (also ran MS-DOS)
• 8088 microprocessor
• touchpad mouse
• portable printer

  weighed 9 lb (4 kg) alone or 14 lb (6.4 kg) with printer The Gavilan computer had a floppy drive that was not compatible with other computers, and it primarily used its own operating system. The company failed.

  In 1984, Apple Computer introduced its Apple IIc model. The Apple IIc was a notebook-sized computer, but not a true laptop. It had a 65C02 microprocessor,128 kilobytes of memory, an internal 5.25-inch floppy drive, two serial ports, a mouse port, modem card, external power supply, and a folding handle. The computer itself weighed about 10 to 12 lb (about 5 kg), but the monitor was heavier. The Apple IIc had a 9-inch monochrome monitor or an optional LCD panel. The combination computer/ LCD panel made it a genuinely portable computer, although you would have to set it up once you reached your destination. The Apple IIc was aimed at the home and educational markets, and was highly successful for about five years.

  Later, in 1986, IBM introduced its IBM PC Convertible. Unlike the Apple IIc, the PC Convertible was a true laptop computer. Like the Gavilan computer, the PC Convertible used an 8088 microprocessor, but it had 256 kilobytes of memory, two 3.5-inch (8.9-cm) floppy drives, an LCD, parallel and serial printer ports and a space for an internal modem. It came with its own applications software (basic word processing, appointment calendar, telephone/address book, calculator), weighed 12 lbs (5.4 kg) and sold for $3,500. The PC Convertible was a success, and ushered in the laptop era. A bit later, Toshiba was successful with an IBM laptop clone.

  Since these early models, many manufacturers have introduced and improved laptop computers over the years. Today's laptops are much more sophisticated, lighter and closer to Kay's original vision.

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