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DOS 4 (other)
DOS 4 or DOS-4 may refer to: * The Soviet space station Salyut 4 Versions of the IBM PC DOS family: *IBM DOS 3.40, announced successor of IBM DOS 3.30 in 1988 *IBM DOS 4.00, released successor of IBM DOS 3.40 in 1988 *IBM DOS 4.01, a bug-fix release at the end of the same year *IBM DOS 4.02, a ROMed version of DOS in IBM PS/1 machines Versions of the Microsoft MS-DOS family: *MS-DOS 4.0 (multitasking), a multitasking version in 1986/1987 by Microsoft *MS-DOS 4.1 (multitasking), a multitasking version for the ICL DRS PWS in 1987 *MS-DOS 3.40, announced successor of MS-DOS 3.31 in 1988 *MS-DOS 4.00 (IBM-developed), successor to MS-DOS 3.31 in 1988 *MS-DOS 4.01, a bug-fix release in 1988 ** Russian MS-DOS 4.01, a special Russian version of MS-DOS 4.01 (RDOS) in 1990 See also * 4DOS * DOS (other) * DOS 3 (other) * DOS 5 (other) {{Letter-NumberCombDisambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salyut 4
Salyut 4 (DOS 4) () was a Salyut space station launched on December 26, 1974 into an orbit with an apogee of 355 km, a perigee of 343 km and an orbital inclination of 51.6 degrees. It was essentially a copy of the DOS 3 (or Kosmos 557), and unlike its ill-fated sibling it was a complete success. Three crews attempted to make stays aboard Salyut 4 ( Soyuz 17 and Soyuz 18 docked; Soyuz 18a suffered a launch abort). The second stay was for 63 days duration, and an unmanned capsule, called Soyuz 20, remained docked to the station for three months, proving the system's long-term durability despite some deterioration of the environmental system during Soyuz 18's mission. Salyut 4 was deorbited February 2, 1977, and re-entered the Earth's atmosphere on February 3. Description Salyut 4 represented the second phase of DOS civilian space station. Although the basic design of Salyut 1 was retained, it switched to three large solar panels mounted on the forward module rather t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |