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1953 IBM, -, . - , RAMAC (Random-Access Method of Accounting and Control ). , , . 1954 .

RAMAC , 1956 IBM 350 . IBM 305, . RAMAC 5 7- 50 (!) 24 , . , Golden Gate -.

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, . , 50-, Univac, ENIAC . Univac , , .

60- . Bryant Computer, ( 1 ) 90 . IBM Telex, 60- , IBM. , , . , , , IBM. , Seagate Technology.

14 . . - . , 80- - .

, , -. , IBM 3340, 30 30 . 1973 , . (, 30-30, ; , , IBM .) 80- , , .

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1979 8- IBM Piccolo (IBM 3350). 14- , . 1980 Seagate Technology 5,25 , 1983 Rodime 3,5- , 1988- PrairieTek 2,5 . , 1 (IBM Microdrive), 0,85 . IBM PC 5- 10 , .

, , . . RAMAC 1200 , 14- 5400 , 5,25, 3,5 2,5 7200 10 . 15 . . , , . 60- 2 . . , .

: ATA (IDE, EIDE), SCSI, FireWire/IEEE 1394, USB Fibre Channel. , . 2002 Serial ATA, , .

, . , , . , , 120 , 115. , 30- 28 , . , (-, -) , 1024 1000, , 103 210.

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1.         (International Electrotechnical Commission, IEC), , , 1 1 . (106). DVD.

2.         , , , 1 1048576 (220).

3.         . , 1 1 . , 1024000 (1024 x 1000). , 1,44 1474560 .

, . (1024 ) 2,4%; (280) 1024 20,8%. , , , , . , , , . , , .

1999 IEC IEC 60027-2, , bi ( binary), 10 2. , 2005 IEEE (Institute of Electrical and Electronics Engineers) (Comite International des Poids et Mesures, CIPM).

, . , , , , , 128 / 128 . , 15,625 Ki , , , 1 / 122 Ki .

           1956 RAMAC 350 (5 , 24 )

           1961 Bryant Computer 4240 (90 , 24 39 , .. 99 )

           1963 14- IBM 1311 (2,69 , 6 )

           1971 IBM 3330-1 Merlin (100 , 11 )

           1971 IBM 23FD (0,816 , 1 8 )

           1973 IBM 3340

           1976 5, 25 Shugart Associates SA400

           1980 5,25 Seagate Technology ST506 (5 )

           1985 Quantum Hardcard (10,5 , 3,5 )

2006 . .

 

 

 

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