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Macintosh Picture Format  |  1989-04-17  |  414KB  |  639x825  |  8-bit (256 colors)
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OCR: Macintosh Internal Hard Disk 40SC System Requirements To use Macintosh Internal Hard Disk 4OSC mus have Macintosh ST Macintosh SF/30 Macintosh II Macintosh Icx or Macintosh IX persona computer. Technical Specifications Capacity Data capacity 40mesabvtes (formatted) Data surfaces 3 and Heads /Surface Block size: 512 bytes Total blocks: 82,020 Blocks Track 28, 33 and 35 .................... Characteristics Average seel time 30 milliseconds Rotational speed: 3,600 and 3.662 rpm Startup time 20 seconds Spin- down time 20 seconds Interface Connects directly to the Macintosh Macintosh SE/30 Macintosh Macintosh IICX r r Macintosh IX via the SCSI 50-pin connector ....... ....... Electrical Line voltage 85 to 270 volts AC requirements Frequency: 47 to 64 hertz Maximum power: 60 STIEA ...........00. ...