8/30/20091Chapter 9-HardwareOverviewMacintosh versus Windows platform.Networking Macintosh and Windows computers.Connections.Memory.Storage devices.Input devices.Output devices.OverviewCommunication devices.
8/30/20092Macintosh Versus WindowsPlatformThe Macintosh platform:Was launched by Apple in 1984.Has a good built-in audio and high-quality graphics capability.Includes hardware and software for digitizing and editing videoand producing DVD discs.Makes multimedia project development easier and smoother.Macintosh Versus WindowsPlatformThe Windows platform:Is a collection of different vendor-neutral components that aretied together by the requirements of the Windows operatingsystem.yInitially focused on business computing and was not suitablefor multimedia. However, it is now easier to find multimediahardware and software for Windows as compared to theMacintosh.Networking Macintosh andWindows ComputersNetworking is essential for direct communication andsharing of resources across platforms.Local area network (LAN), wide area network (WAN), andInternet connections provide connectivity and networkingcapabilities.
8/30/20093Networking Macintosh andWindows ComputersIn a LAN, workstations are located within a short distance.They are relatively less expensive.In a WAN, communication systems span great distancesand are typically set up and managed by largecorporations. They are expensive to install and maintain.A dial-up connection to the Internet through an InternetService Provider (ISP) also enables communication.Networking Macintosh andWindows ComputersTo establish communication between a Macintosh andWindows PC, install Ethernet system and client-serversoftware.Ethernet is a method of wiring up computers.Client/server software is required for communication andtransfer of files.Macintosh computers have built-in Ethernet networking,while Windows PCs require an additional Ethernet card.ConnectionsThe various connection methodologies include:Small Computer System Interface (SCSI).Integrated Drive Electronics (IDE).Universal Serial Bus (USB).FireWire.
8/30/20094Small Computer SystemInterface (SCSI)SCSI can connect internal and external peripheralequipments and devices that conform to the SCSI standard.SCSI cards can be installed on Macintosh and PC platforms.SCSI is preferred for real-time video editing, networkservers, and situations that require mirroring.SCSI ID conflicts should be avoided by providing unique IDsto devices.Integrated Drive Electronics(IDE)IDE connections are also known as Advanced TechnologyAttachment (ATA).They connect only internal peripherals.They can connect four peripherals mounted inside the PC.The circuitry for IDE is less expensive than SCSI.IDE utilizes processor chip time.Universal Serial Bus (USB)It is a standard for connecting devices to the computerusing the plug-and-play system.USB uses a single cable to connect 127 USB peripherals toa single PC.It can be attached to one computer at a time.
8/30/20095FireWireFireWire was introduced by Apple in the 1980s.It is the industry standard and provides support for high-bandwidth serial data transfer, particularly for digital videod tand mass storage.Can connect multiple computers and peripheral devices(peer-to-peer).It is the most common method for connecting andinterconnecting professional digital video equipment.MemorySufficient memory must be allocated for storing andarchiving files.Memory requirements of a multimedia project depend onthe projects content and scope.The two types of memory are random access memory(RAM) and read only memory (ROM).MemoryRAM enables the simultaneously running of manyapplications.ROM is non-volatile. The BIOS program that boots up thecomputer resides in the ROM.
8/30/20096Storage DevicesFloppy disk - Is a inexpensive, removable, and portabledevice for storing binary data. They are made of flexiblemylar plastic coated with a thin layer of special magneticmaterial.Hard disk - Is a non-removable mass-storage device, andhas a higher data storage capacity and data transfer speed.Storage DevicesSyquest cartridge - Is a removable storage medium andcan hold 44 MB of data.Zip cartridge - Is inexpensive and can hold 100MB of data.Jaz cartridge - Is a removable storage medium that canhold 1GB of data.Magneto-optical drive - Is rewriteable and uses a highpower laser. It is suitable for archiving data.Storage DevicesDigital Versatile Disc (DVD):Is an optical disc technology for distributing multimedia andfeature length movies.C t 1GB f d t Th id h d d t il d idCan store 1GB of data. They provide sharp and detailed videoresolution.The two types of DVDs are DVD-video and DVD-ROM.
8/30/20097Storage DevicesFlash or Thumb Drives:Small storage devices that can be integrated with USB orFireWire devices.C t b t 8 b t t l GB f d tCan store between 8 megabytes to several GB of data.More reliable than disk drives.Small printed circuit board encased in sturdy metal or plastic.Usable, trendy, and convenient.Storage DevicesCD-ROMs:CD-ROM player is an important delivery medium for large,mass-produced multimedia projects.CD Recordable (CD-R) - Is very inexpensive, and suitablefor short-run distribution of finished multimedia projects.These write-once CDs can be used as high-capacity filearchives.Storage DevicesCD-RW recorder can rewrite 700 MB of data into a CD-RWdisc about 1,000 times.CD-RWs are like CD-Rs except a CD-RW can be erased.
8/30/20098Input DevicesKeyboard - Is the most commonly used input device. Themost common keyboard for PCs is the 101 style, whichprovides 101 keys.Mouse - Is the standard input device for a graphical userinterface (GUI).Input DevicesTrackball - It is suitable to small confined environmentssuch as a portable laptop.Touchscreen - They are monitors that usually have atextured coating across the glass face.Input DevicesMagnetic card encoder and reader - Is useful when aninterface is needed for a database application or multimediaproject that tracks users.G hi t bl t P id t t l f diti fi lGraphic tablet - Provides great control for editing finelydetailed graphic elements.Scanner - Is the most useful device for producingmultimedia. They are categorized as flat-bed, handheld,and drum.
8/30/20099Input DevicesOptical Character Recognition (OCR) device - Is used toconvert printed matter into ASCII text files.Infrared remote - Is used to interact with the project whenthe user needs to move about.Input DevicesVoice recognition system - Is used to facilitate hands-freeinteraction with the project.Digital camera - Is used to capture still images of a specificresolution, and store them in camera’s memory. Theseimages can then be uploaded to a computer.Output DevicesAudio devices:They include sound chips and microphones.Amplifiers are required when the project has to be presentedt l di i i ttito a large audience or in a noisy setting.Speakers can be internal or external.
8/30/200910Output DevicesVideo devices:Video creates the maximum visual impact.Video devices include videodisc players and video cards.Videodisc players provide precise control over the image beingviewed.Video cards enable the user to place an image in a window onthe computer monitor.Output DevicesProjectors:Projectors are used when you have a larger audience that canbe accommodated around a computer monitor.Th diff t t f j t i l d th d t bThe different types of projectors include cathode-ray tube(CRT), liquid-crystal display (LCD) panels, stand-alone LCDprojectors, and light-valve projectors.Output DevicesProjectors (continued):CRT projectors are compatible with the output of mostcomputers as well as televisions.LCD panels are portable devices that are popular for on-the-LCD panels are portable devices that are popular for on theroad presentations.Light-valve projectors use liquid crystal technology. Theimages generated are very bright and color saturated and canbe projected onto wide screens.
8/30/200911Output DevicesPrinters:The two types of printers are laser and inkjet.Laser printers offer higher print quality, lower operating costs,but a higher initial cost.Inkjet printers are comparatively cheaper, but require highermaintenance.Color printers have become an important part of multimediadevelopment.Communication DevicesModemsISDNCable modemsModemsModems modulate and de-modulate analog signals.They provide connectivity through standard phone lines.Modems can be internal or external.Modem speed is measured in baud, and the standardmodem speed should be at least 56 Kbps.
8/30/200912ISDNISDN stands for Integrated Services Digital Network.It is used for higher transmission speeds by telephone.They transfer data at the rate of 128 Kbps.ISDN lines are used for networking, Internet access, andaudio-video conferencing.They are more expensive than the conventional analoglines.Cable ModemsThey provide Internet access at speeds faster than atelephone modem, over the same cable network thatsupplies the television signal.However, due to noise in the system, sending rates may bemuch slower than receiving rates.SummaryMacintosh and Windows are the two most commonhardware platforms used in multimedia.LANs, WANs, Ethernet, and client-server software facilitatecommunication and connectivity among computers.Storage devices include floppy disks, hard disks, Zip drives,Jaz drives, MO drives, DVDs, and CD-ROMs.
8/30/200913SummaryInput devices include keyboards, mice, trackballs,touchscreens, graphic tablets, scanners, OCR devices,infrared remotes, voice recognition software, and digitalcamerascameras.Output devices include audio devices, speakers, amplifiers,monitors, video devices, projectors, and printers.Communication devices include modems, ISDN lines, andcable modems.