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The 1535EXP was also the first rugged portable PC to attain full TEMPEST accreditation from the NSA. [3] Another modification – the Grid GRiDCASE 1537EXP – has another screen (640×480 instead of 640×400, but with less physical size). The power input is 100–240 V AC 50/60/400 Hz, 80 W.
The first commercially successful tablet-type portable computer was the GridPad, [9] released in September 1989. Its operating system was based on MS-DOS. A GRiD Compass 1101 was the first laptop in space. Required special modification to add a fan to pull air through the case. [10] Subsequently a GRiD 1530 flew on STS-29 in March 1989.
This list of computer size categories attempts to list commonly used categories of computer by the physical size of the device and its chassis or case, in descending order of size. One generation's "supercomputer" is the next generation's "mainframe", and a "PDA" does not have the same set of functions as a "laptop", but the list still has ...
A rugged tablet may be semi-rugged or fully rugged. The semi-rugged might have a protective case, rain-resistant body. Fully rugged tablets are engineered from the inside-out to work in extreme temperatures and other harsh conditions. They are designed to resist drops, shocks and vibrations while maintaining strength to be dust- and waterproof.
It was designed to be portable, with a rugged ABS plastic case and a handle. [3] The Osborne 1 is about the size and weight of a sewing machine and was advertised as the only computer that would fit underneath an airline seat. [4] It is now classified as a "luggable" computer when compared to those later "laptop" designs such as the Epson HX-20.
The Toughbook CF-U1 is a fully rugged ultra-mobile PC that runs the full Windows 7 Professional operating system. It has a 5.6” LCD touch screen and dual hot-swappable batteries. It has a sealed, fan-less design that meets MIL-STD-810G and IP65 standards for environmental conditions, including withstanding a drop of 6 feet from any angle.
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