Munazza javed chapter08

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Lahore Leads University 923224907404

Text of Munazza javed chapter08

  • 1. Name Munazza Javed Roll no F12-1022ProgramBSCS

2. 8CHAPTERSECONDARY STORAGE 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 3. Secondary StorageNon-VolatilePermanent 8-3 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 4. SEQUENTIAL ACCESS DEVICE DIRECT ACCESS DEVICE 8-4 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 5. Most Popular Sequential Device It ConsistsOf A Plastic Ribbon Usually (1/2 inch or inch) Wide Coated With A RecordingMaterial That Can Be Magnetized. The Tape Ribbon Is Stored In Reels, SmallCartridge, Or Cassette.8-5 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 6. Storage Organizations Storage Capacity Data Transfer Rate Tape Drive Tape Controller 8-6 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 7. Track / Channel numberschar of corresponding codes0123456789 ABCDEFGHI7 || ||| | | || | per bits6| | | | || | | |5| | | | || | | | zone4 | ||||3|||||||| |2 | | | | | ||| Numeric1 | | | | | | || |8-7 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 8. Track /channelchar forcorresponding 0123456789 A BC 9|| 8 digits 8 |||||| 2 digits 7 |||||||||||| | || |Added Zone 6 |||||||||||| | || |Added Zone 5 ||||||||||||Zone 4 | | |||Parity 3 | |||||||||||Zone 2 | | | | | || Units Digits 1||||4 digits8-8 2005 The McGraw-Hill Companies, Inc. All Rights Reserved. 9. THANK YOU8-9 2005 The McGraw-Hill Companies, Inc. All Rights Reserved.