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Microdrive

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An ultra-miniature hard disk from Hitachi Global Systems. The Microdrive was developed and introduced by IBM in 1998 and acquired by Hitachi in 2002. The Microdrive uses a single platter the size of an American quarter that holds up to 8GB. Using one or two GMR heads, the entire mechanism is built into a Type II CompactFlash form factor.

Size Matters
The tiny elements inside such a small drive offer quite an advantage. Because the actuator has 50 times less inertia than one used in a larger drive, it can ramp up to full speed in half a second. As a result, the drive can stop spinning when data are not being accessed, which conserves power in handheld devices. See actuator and CompactFlash.

The Microdrive
While solid state devices continue to amaze us, the Microdrive is a marvel of electromechanical technology. The platter stops rotating to conserve power, but can ramp up to full speed in half a second.
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It captures images, sound and stills not onto tape, but into a Microdrive hard-disk, which is cleverly located, alongside the battery, in the unit's adjustable-angle handgrip.
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The microdrive can store the most video footage, obviously, slipping into the CF slot and giving owners 15 minutes and 9 seconds' worth of 30fps video with its 1GB capacity.
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Along with PAKit Pro, In-System Design (ISD) has also introduced the PAKit Reader, shirt-pocket sized personal data management devices using IBM Microdrives or CompactFlash memory cards.
IN-SYSTEM DESIGN DEBUTS MOBILE DATA STORAGE PRODUCT LINE AT ... by EDP Weekly's IT Monitor
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