This document summarizes the history of laptop computers from 1975 to 2007. It notes that the IBM 5100 in 1975 was the first portable computer, weighing 55 pounds, followed by the Osborne 1 in 1981, the first true laptop weighing 24.5 pounds. Key developments included the TRS-80 Model 100's LCD screen in 1983, the Commodore SX-64's color screen in 1984, and IBM's PC Convertible weighing under 15 pounds in 1986. Laptops continued to get smaller and lighter, with innovations like integrated CD-ROM in 1994 and slim DVD-ROM in 2003.

1. Laptop computer history
Mierlut Jonathan-Istvan

2. 1975
• The first portable computer was the IBM 5100
• It weighed 55 pounds (25 kilograms), even with this weight it was
much lighter than any other computer at that time.
• This computer is not like the laptops we imagine/see today when
we here the word “laptop”, but it made a path for the development
of truly portable computers.
1981
• The Osborne I was the first truly portable computer and is
recognised as the first laptop computer.
• It weighed 24½ pounds (11 kilograms) and had a 5’’ (12.70 cm)
display.
• This computer was developed by Adam Osborne, in April 1981
• In that year Epson released the first portable computer with a
built-in printer.

3. 1983
• Radio Shack released the TRS-80 Model 100 portable computer in
the U.S.
• It had a LCD, this feature was really rare back then
• It was invented and firstly developed in Japan, but Radio Shack
bought it from Kyocera
1984
• Commodore SX-64 was the first laptop with full-color display
screen, it weighed 20 pounds (9 kg) and was sold for $995.
1986
• IBM released their first laptop, the PC Convertible
• It weighed 12 pounds (5.5 kg), making it the first laptop under
15 pounds (6.8 kg)

4. 1989
• Apple released their first laptop, the Macintosh Portable in September
• Its price was $6500 at release, it was not a popular and well-selled laptop
• NEC released NEC UltraLite which was the first notebook style laptop
• Its weight was less than 5 pounds (2.27 kg)
1991
• After Apple did a huge mistake with the Macintosh Portable, they
re-worked their laptop concept and released the PowerBook line.
PowerBook 100 PowerBook G4
1992
• In 1992 Intel and Microsoft worked together and developed/released
APM (Advanced Power Management) specification for laptops.
• Olivetti developed and released the first laptops featuring a touchpad

5. 1994
• IBM released the ThinkPad 775CD, the first laptop to feature an
integrated CD-ROM drive.
2002
• Toshiba released the Toshiba Portege 2000, the thinnest laptop to be developed at
only ¾ of an inch (1.9 cm) at the thickest part.
2003
• Toshiba released the Toshiba Portege M100, which is the first laptop to feature a
slim DVD-ROM drive.
2007
• ASUS released the Eee PC 701 in October 2007, which was the first netbook to be
available. It featured a 7" screen, an Intel Celeron-M processor, and a 4 GB SDHC storage
disk.

6. • As technology is developing they find new solutions for different
problems with laptops every year.
• Today laptops are extremely popular, maybe more popular then
desk PCs.
• While I was searching for the different informations I was pretty
surprised by the development process of the portable computer, I
hope you all liked and found my presentation as much as I did.
• Have a nice day:)
Sources:
https://www.computerhope.com/history/laptop.htm
https://www.computerhope.com/jargon/a/apm.htm