Memory Stick

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Memory Stick

• Capacity
• Advantages
• Disadvantages
• Solid State Technology

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Flash Card

• Uses
• Capacity
• Solid State technology
• Advantages
• Disadvantages

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Internal Card Reader
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MP3 Player

• MPMan 1998
• Flash based
• Hard disk based
• MP3/MP4 file format
• iTunes

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Digital Storage Summary
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PC Monitors
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Monitor

• Altaire PC
• Main output device
• Development of monitors
• CRT vs LCD
• Monitor Sizes
• Screensavers

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Graphics Card

• Function
• Resolution (Pixels)
• SVGA
• XGA
• SXGA
• Colour depth (8 bit, 16 bit, 32 bit)
• Video RAM

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Adjusting Screen Resolution
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Input Devices - Keyboard

• Most widely used input device
• QWERTY
• 5 sections
• Inefficient

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QWERTY
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Input Devices - Mouse

• 1981 IBM PC command driven interface
• Windows GUI
• WIMP
• Roller ball
• Laser
• Maintenance

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Alternative Pointing Devices
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Input Devices - Touchscreen

• Intuitive
• Easy to learn
• Mass market e.g.DART, LUAS

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Input Devices Bar Code Reader

• Retailing
• Unique bar codes
• Automatic Stock updates
• No need to remember prices

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Input Devices OMR

• Optical Mark Reading
• OMR scanner
• Position of mark determines value
• Used in lotto, MCQ

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Input Devices - OCR

• Optical Character Recognition
• Used by Scanners
• Quickly input documents without typing

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Input Devices - MICR

• Magnetic Ink Character Recognition
• Used in banking
• Special Ink
• Sort Code, a/c number, a/c name

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Input Devices - MICR
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Deskjet Printers

• Popular with home users
• Cheap to buy
• Expensive to run
• Slow
• Ink Cartridges
• Impact Printer
• Maintenance

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Laserjet Printers

• More expensive to buy
• Cheaper to run
• Office use
• Colour is expensive
• Toner cartridges
• Fast