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Pengenalan Komputer Dan Teknologi Informasi

Pengenalan Komputer Dan Teknologi Informasi. Secondary Storage. Peng ertian. Storage : tempat penyimpanan Secondary Storage Storage Media. Tujuan. Menyimpan data dan program : Permanen, tidak tergantung pada catu daya Backup, cadangan, keamanan Distribusi, memindahkan.

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Pengenalan Komputer Dan Teknologi Informasi

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  1. PengenalanKomputer Dan TeknologiInformasi Secondary Storage

  2. Pengertian • Storage : tempat penyimpanan • Secondary Storage • Storage Media

  3. Tujuan • Menyimpan data dan program : • Permanen, tidak tergantung pada catu daya • Backup, cadangan, keamanan • Distribusi, memindahkan

  4. Representasi Data • Standard representasi: • ASCII • EBCDIC • UNICODE

  5. ASCII

  6. Representasi biner • Biner: • data disimpan sebagai state • ON = 1 • OFF = 0

  7. Standard • Jumlah kode • ASCII = American Standard Code for Information Interchange; ASCII-8 : 8 bit = 256 chars (0-255) • EBCDIC = Extended Binary Coded Decimal Interchange Code; 256 chars • UNICODE; 65536 • Jika • 1 huruf diwakili 1 char, dan • 1 char ASCII-8 memerlukan tempat penyimpanan 8 bit (=1 byte), • maka berapakah tempat untuk menyimpan “FE UNPAR” ? • Berapa memory untuk menyimpan “FE UNPAR” dalam UNICODE?

  8. Satuan • 1 Byte = 8 bit • 1 Kilobyte (KB) = 1024 Byte • 1 Megabyte (MB)=1024 KB • 1 Gigabyte (GB) = 1024 MB • 1 Terabyte (TB) = 1024 GB bites? 1 MegaByte = 1,024 x 1,024 Bytes 1 MegaByte = 1,048,576 Bytes Kb = Kilobits KB = KiloBytes

  9. Jenis • Media penyimpanan: • Magnetic • Optical disk • (Removable) Solid-state Storage Device

  10. Magnetic • Magnetic Tape • Sequential Access Storage Device (SASD) • Magnetic Disk • Direct Access Storage Device (DASD)

  11. Magnetic Tape • Sequential Access Storage Device (SASD) • Makin jarang digunakan, tapi masih ada dipakai untuk backup

  12. Magnetic Disk • Floppy disk (diskette) • Hard disk

  13. Magnetic Disk: diskette • Bahan • Bagian • Track • Sector

  14. Floppy Disk (1) • Ukuran

  15. Floppy Disk (2) • Formatting • Soft-sector • Hard-sector • Kepadatan rekam • Single Density • Double Density • Quad Density • High Density • Sisi rekam • Single Side • Double Side

  16. Floppy Disk (3) • Cluster : beberapa sector sebagai satu blok data • Seandainya 1 cluster = 4 KB, maka • File 3 KB memerlukan 1 cluster (4 KB) • File 5 KB memerlukan 2 cluster (8 KB) • Standard: • FAT16 (DOS, Win31, Win95) = 32 KB • FAT32 (Win98, XP) = 4 KB

  17. Floppy Disk (3a) • Diketahui disket, free space 100 KB • Seandainya 1 cluster = 4 KB • Disimpan file ukuran 5 KB • Free space saat ini menjadi: 92 KB

  18. Floppy Disk (4) • High-capacity floppy disk • Zipdisk (Iomega) • Superdisk (Imation) • HiFD disk (Sony)

  19. Hard Disk (1)

  20. Hard Disk (2) • Seperti floppy

  21. Hard Disk (3) • Seperti floppy, bahan logam

  22. Hard Disk (4) • Seperti floppy, • Beberapa piringan, cylinder

  23. Hard disk (5) • Speed: rotations per minute (rpm) • Capacity: Giga Byte (GB) • Transfer rate: Mega bit per second (Mbps) • Controller: IDE, ATA, EIDE ...

  24. Hard disk (6) : varian • Removable hard disk • Redundant Array of Inexpensive Disks (RAID) • Small Computer System Interface (SCSI)

  25. Hard disk, removable • bracket • USB v1.1 data transfer 12Mbits/sec. • Compatible with almost every 2,5" hdd. • Hot swappable function. Included Win98/98se driver. Works without driver direct with Win ME/2000/XP, linux.

  26. Hard Disk : raid 5 • High capacity • Mirroring • Fault tolerant • Stripping

  27. Optical Disk

  28. Optical Disk • ROM : Read Only Memory • WORM : Write Once, Read Many • CD-Recordable (CDR) • Menulis CD dengan cara membakar (burn) permukaan piringan • WMRM : Write Many Read Many • ReWrite CD (CDRW)

  29. Optical Disk • DVD (Digital Video Disk, Digital Versatile Disk) : • DVD-ROM • DVD-R • DVD-RAM • CD (Compact Disk) : • CD-ROM • CD-R • CD-RW • mini-CD

  30. CD • Format: CD-Audio, CD-ROM (ISO), VCD, SVCD, CD-I, .. • Kapasitas: • Mini CD: 200 MB • CD : 650 – 700 MB • DVD : 4.7 GB – 17 GB • Transfer rate: • CD drive : 1x = 150 KBps • DVD drive: 1x = 1.32 MBps

  31. Fluorescent Multilayer Disk • Capacity : 20 GB – 140 GB • Transfer rate : 1 GBps

  32. Solid State

  33. Holographic

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