Tablet ComputerVuong Ngoc AnhBIT1SNComputer Hardware and Operating System
General information• Tablet: a mobile computer equipped with a large touchscreenas the main input device.• Form factors:• Slate tablet: Samsung Series 7.• Convertible tablet: Asus Eee PC T101MT.• Features: portable, mobility, touchscreen, wireless access,docking, software integrated, etc.
Screen• Screen sizes: from 5 inch (Dell Streak) to 7 inch (SamsungGalaxy Tab) and 10 inch (Apple iPad); 12.1 inch (HP EliteBook),13.3 inch (Fujitsu LifeBook T900).• Display resolution: ranges from 800x480 (Coby Kyros) to1024x600 (HP Slate 500); 1024x768 (Apple iPad 2); 1280x800(Acer Iconia Tab A500)• How to enter data:• Pen (stylus).• E- ink (if supported by application).• Text Input Panel.Image source: maxcdn.liewcf.com
Touchscreen• Touchscreen: an electronic visual display that can detect thepresence and location of a touch within the display area(Wikipedia).• Two basic system of tablet devices touchscreen:• Resistive screen: detects a touch on a screen through pressure.• Capacitive screen: also detects changes in electrical fields butdoes not rely on pressure.Image source: Tech Mania and Telecom Circle
Inside a tablet• Microprocessor.• Battery.• Accelerometers and gyroscopes.• Graphics processors.• Flash-based memory.• WiFi/GPS/antennas/Bluetooth devices.• Power supply.• Speakers.• A touchscreen controller chip.• Camera sensors, chips and lenses.• No fan.
Inside a tabletImage from: everythingabouttablet.com
Apple iPad 2mainPrinted CircuitBoardImage from tabletfactorystore.com
CPU and Processors• Single to quad-core processors.• Some tablets have underclocked processors to reduce heatproduction and converse battery life.• Popular microprocessor unit used for tablets: Nvidias Tegra,Samsungs Exynos, Qualcomms Snapdragon, Apples A4,Marvells Armada, Intels Atom.Image from: goodereader.com
Storage capacity• Most tablets used flash-based memory.• Advantages: faster access and low power usage.• Disadvantages: low capacity (16 GB – 64 GB).• Some manufacturers still put HDDs in their tablets for highercapacity.
Operating System• Previous: tablets run only on PC operating system only.• Nowadays: tablets also fit in with variations of smartphoneoperating system.• Examples:• Googles Android 3.x (Honeycomb): Samsung Galaxy Tab 10.1.• Apples iOS: iPad, iPad 2.• Windows 7 Tablet: Lenovo IdeaPad, Acer Iconia W500.• WebOS: HP TouchPad.• BlackBerry Tablet OS: RIMs BlackBerry PlayBook.
Sources Tablet computer. Wikipedia. Retrieved on March 5th 2012. Strickland, J. How Tablet Works. How Stuff Works. Retrieved onMarch 5th 2012. Grabham, D. 2011. Tablets Operating System Compared: ABeginners Guide to the Major Tablet Operating System. Tech Radar.Retrieved on March 5th 2012. Bell, D. 2011. Tablet Buying Guide: Operating Systems. CNETReviews. Retrieved on March 5th 2012. The Processors Behind the Tablet: Infographic Comparison. OnlineMarketing Trend. 2011. Retrieved on March 5th 2012. How Do Touchscreen Monitors Know Where You are Touching. HowStuff Works. Retrieved on March 5th 2012. Brain, M. How Gyroscopes Work. How Stuff Work. Retrieved onMarch 5th 2012. Chef, S. 2011. Inside a Tablet or, What Makes Those Tablets Tick.Everything About Tablets. Retrieved on March 5th 2012.