The document summarizes different types of computer hardware including auxiliary storage devices, input/output architecture, and interfaces. It describes magnetic tape, disks, floppy disks, optical disks, and semiconductor disks. It also covers RAID configurations, input/output control methods like bus, DMA, and different interfaces like serial, parallel, SCSI, and USB.

1. Part 2 Computer Systems (Aux and I/O) Hardware (Text No. 1 Chapter 2)

4. Magnetic Tape

8. Magnetic Disk Unit

9. Opening Up Hard Disk

10. Platters and Heads

11. Inside Hard Disk

13. Magnetic Media

15. Magnetic Media

16. Inside Hard disk

17. Magnetic Disk Structure

25. Magnetic Disk Structure

35. Floppy Disk Track – Concentric ring of data on a side of a disk. Sector – A subset of a track, similar to wedge or a slice of pie.

37. Floppy Disk Structure

46. CD-ROM Structure

47. CD Surface

48. Reading from CD-ROM

49. Disney World on CD-ROM

53. Hollywood on DVD

55. DVD Surface

56. DVD Recording

58. CD versus DVD Note that double layer is only applicable to DVD. 440 nanometers NA Min Pit Length (Double layer) 400 nanometers 830 nanometers Min Pit Length (Single layer) 740 nanometers 1600 nanometers Track Pitch DVD CD Specification

60. Flash Memory

72. Bus

73. Bus

80. Summary of I/O Interfaces