![]() In Japan they were often called 'Bentocom'. They are also called 'Portable Workstations' or 'Portable PCs'. Larger portable computers were commonly known as 'Lunchbox' or 'Luggable' computers. Portable computers, by their nature, are generally microcomputers. The 2010s introduced wearable computers such as smartwatches. Laptops were followed by lighter models such as netbooks, so that in the 2000s mobile devices and by 2007 smartphones made the term "portable" rather meaningless. ![]() ![]() These luggable computers still required a continuous connection to an external power source this limitation was later overcome by the laptop computers. The next major portables were the 50-pound (23 kg) IBM 5100 (1975), Osborne's 24-pound (11 kg) CP/M-based Osborne 1 (1981) and Compaq's 28-pound (13 kg), advertised as 100% IBM PC compatible Compaq Portable (1983). The first commercially sold portable computer might be the 20-pound (9.1 kg) MCM/70, released 1974. In modern usage, a portable computer usually refers to a very light and compact personal computer such as a laptop, miniature or pocket-sized computer, while touchscreen-based handheld ("palmtop") devices such as tablet, phablet and smartphone are called mobile devices instead. These computers usually include a display and keyboard that are directly connected to the main case, all sharing a single power plug together, much like later desktop computers called all-in-ones (AIO) that integrate the system's internal components into the same case as the display. The MIT Suitcase Computer, MIT Digital Systems Laboratory, 1975Ī portable computer is a computer designed to be easily moved from one place to another, as opposed to those designed to remain stationary at a single location such as desktops and workstations. ![]()
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