6.1 © 2003 by Prentice Hall

Suffolk University Suffolk University Cape Cod CampusCape Cod Campus

Frank Sawyer School of Management

Management Information Systems: ISOM 810Spring 2004 –Session Five

Professor Joan Donovan

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66

MANAGINGMANAGING

HARDWARE ASSETSHARDWARE ASSETS

Chapter

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COMPUTER HARDWARE AND INFORMATION TECHNOLOGY INFRASTRUCTURE

Essentials of Management Information SystemsEssentials of Management Information SystemsChapter 6 Managing Hardware and Software AssetsChapter 6 Managing Hardware and Software Assets

Hardware Components of a Computer System

Figure 6-1

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COMPUTER HARDWARE AND INFORMATION TECHNOLOGY INFRASTRUCTURE

Essentials of Management Information SystemsEssentials of Management Information SystemsChapter 6 Managing Hardware and Software AssetsChapter 6 Managing Hardware and Software Assets

The Computer System

bitbit

• Binary digitBinary digit

• Represents smallest unit of data in the form of either 0 or 1Represents smallest unit of data in the form of either 0 or 1

bytebyte

• String of bits, usually eightString of bits, usually eight

• Stores one number or character Stores one number or character

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COMPUTER HARDWARE AND INFORMATION TECHNOLOGY INFRASTRUCTURE

Essentials of Management Information SystemsEssentials of Management Information SystemsChapter 6 Managing Hardware and Software AssetsChapter 6 Managing Hardware and Software Assets

Bits and Bytes

Figure 6-2

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STORAGE, INPUT AND OUTPUT TECHNOLOGY

Essentials of Management Information SystemsEssentials of Management Information SystemsChapter 6 Managing Hardware and Software AssetsChapter 6 Managing Hardware and Software Assets

Input and Output Devices

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STORAGE, INPUT AND OUTPUT TECHNOLOGY

Essentials of Management Information SystemsEssentials of Management Information SystemsChapter 6 Managing Hardware and Software AssetsChapter 6 Managing Hardware and Software Assets

Input and Output Devices

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Computer Hardware:

2. Input and Output Devices

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Input and OutputInput and Output

• Input devices convert data and Input devices convert data and programs that people can programs that people can understand into a form understand into a form comprehensible to the CPU.comprehensible to the CPU.

• Output devices convert the strings of Output devices convert the strings of bits used by the computer back into bits used by the computer back into a form that people can understand.a form that people can understand.

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KeyboardsKeyboards

• Keyboards can differ in number of keys, key Keyboards can differ in number of keys, key arrangement, types of special keys, and touch. arrangement, types of special keys, and touch.

• Function keysFunction keys enable software packages to be enable software packages to be customized to meet a user's applications customized to meet a user's applications needs.needs.

• The The numeric keypadnumeric keypad makes it easy to enter makes it easy to enter numbers quickly. numbers quickly.

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Keyboards

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Pointing Devices: MousePointing Devices: Mouse

• Older mechanical mice move a ball on Older mechanical mice move a ball on the bottom of the mouse.the bottom of the mouse.

• Newer optical mice are completely Newer optical mice are completely sealed and don’t require cleaning.sealed and don’t require cleaning.

• Common mouse operations are Common mouse operations are clickingclicking,, scrollingscrolling,, and and dragging and droppingdragging and dropping..

Mouse

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Mouse

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Pointing Devices: Electronic PensPointing Devices: Electronic Pens

• Electronic pen: an alternative to the Electronic pen: an alternative to the mouse to select objects or to write or mouse to select objects or to write or draw on the screen draw on the screen

• Devices that use pen input:Devices that use pen input:– Graphics tablets– Signature capture devices– Pen-based computers

6.15 © 2003 by Prentice HallElectronic Pens

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Electronic Pens

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Pointing Devices: Touch ScreensPointing Devices: Touch Screens

• Touch screens Touch screens are used:are used:

– When other input

devices are impractical

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Other Pointing DevicesOther Pointing Devices

• JoystickJoystick• TrackballTrackball• Pointing stickPointing stick• Touch padTouch pad

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Scanners and Related DevicesScanners and Related Devices

• Source data automationSource data automation involves involves collecting data in machine-readable collecting data in machine-readable form as soon as it is generated. form as soon as it is generated.

• Source data automation is used to Source data automation is used to convert convert source documents source documents into into digital form and commonly utilizes digital form and commonly utilizes some type of scanner.some type of scanner.

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Optical ScannersOptical Scanners

• Optical scanner: converts hard-copy images of text pages, Optical scanner: converts hard-copy images of text pages, photographs, and drawings into digital formphotographs, and drawings into digital form

• Types of image scanners:Types of image scanners:– Flatbed– Sheet-fed– Hand-held– Drum– Three-dimensional

    With optical character recognition (OCR), With optical character recognition (OCR), some scanners can recognize scanned-in some scanners can recognize scanned-in text.text.

..

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Optical Scanners

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Optical ReadersOptical Readers

• Optical marksOptical marks

• Optical Optical characterscharacters

• Optical codesOptical codes

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Barcode Barcode ScannerScanner

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Multimedia Input: Digital CamerasMultimedia Input: Digital Cameras

• Digital cameras record data onto digital Digital cameras record data onto digital media instead of film.media instead of film.

• The camera is either connected to a port on The camera is either connected to a port on the PC or media is inserted into a reader the PC or media is inserted into a reader attached to the PC. attached to the PC.

• Software that comes with the camera then Software that comes with the camera then allows you to transfer images to the PC and allows you to transfer images to the PC and erase media so more photos can be taken.erase media so more photos can be taken.

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Digital Cameras

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Multimedia Input: Video CamerasMultimedia Input: Video Cameras

• Video cameras Video cameras can be used to either can be used to either record or send images over the record or send images over the Internet.Internet.

• Video input can also be obtained by Video input can also be obtained by using special hardware to transfer using special hardware to transfer conventional video images to the conventional video images to the computer.computer.

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PC video PC video cameracamera

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Multimedia Input:Multimedia Input:Audio Input DevicesAudio Input Devices

• Voice-input systems convert spoken Voice-input systems convert spoken words to digital data. words to digital data.

• Music-input systems can record musical Music-input systems can record musical input for use with a multimedia input for use with a multimedia presentation or to be edited or combined presentation or to be edited or combined with other input. with other input.

• Telephony Telephony is the process of performing is the process of performing telephone-oriented tasks using a telephone-oriented tasks using a computer.computer.

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Voice Input SystemVoice Input System