double-speed drive
41Crankset — A Shimano Deore right crankset, showing crank arm, spider, three chainrings and chainring guard …
42Bicyclette Brompton — Brompton Bicycle Logo de Brompton Bicycle Création 03 06 1976 Fondateur(s) Andrew Ritchie …
43Brompton Bicycle — 51° 29′ 27″ N 0° 17′ 35″ W / 51.4907, 0.2931 …
44Brompton bicycle — Logo de Brompton Bicycle Création 03 06 1976 Fondateur(s) Andrew Ritchie …
45Sega Saturn — Sega Saturn …
46History of the floppy disk — 8 inch, 5¼ inch, and 3½ inch floppy disks Over the history of the floppy disk a number of different formats were used. Floppy disks have now been largely superseded by other storage media and by network file transfer. Contents …
47Atari ST — Infobox computer Photo = Name = Atari ST (family) Type = Personal computer Released = 1985 Discontinued = 1993 Processor = Motorola 68000 @ 8 MHz Memory = 512 kilobytes (512×210 bytes) to 4 megabytes (4×220 bytes) OS = Atari TOSThe Atari ST is a… …
48Doubly-fed electric machine — Doubly fed electric machines (i.e., electric motors or electric generators) belong to a category of electric machines that incorporate two multiphase winding sets of similar power rating that have independent means of excitation. As a result,… …
49Doubly fed electric machine — Doubly fed electric machines are electric motors or electric generators that have windings on both stationary and rotating parts, where both windings transfer significant power between shaft and electrical system. Doubly fed machines are useful… …
50Commodore 1571 — The Commodore 1571 disk drive The Commodore 1571 was Commodore s high end 5¼ floppy disk drive. With its double sided drive mechanism, it had the ability to utilize double sided, double density (DS/DD) floppy disks natively. This was in contrast… …
