Computer Hardware and Operating System Course BIT1SN

1. Tablet Computer
Vuong Ngoc Anh
BIT1SN
Computer Hardware and Operating System

2. General information
• Tablet: a mobile computer equipped with a large touchscreen
as 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.

3. Screen
• Screen sizes: from 5 inch (Dell Streak) to 7 inch (Samsung
Galaxy Tab) and 10 inch (Apple iPad); 12.1 inch (HP EliteBook),
13.3 inch (Fujitsu LifeBook T900).
• Display resolution: ranges from 800x480 (Coby Kyros) to
1024x600 (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

4. Touchscreen
• Touchscreen: an electronic visual display that can detect the
presence 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 but
does not rely on pressure.
Image source: Tech Mania and Telecom Circle

5. 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.

6. Inside a tablet
Image from: everythingabouttablet.com

7. Apple iPad 2mainPrinted CircuitBoard
Image from tabletfactorystore.com

8. CPU and Processors
• Single to quad-core processors.
• Some tablets have underclocked processors to reduce heat
production and converse battery life.
• Popular microprocessor unit used for tablets: Nvidia's Tegra,
Samsung's Exynos, Qualcomm's Snapdragon, Apple's A4,
Marvell's Armada, Intel's Atom.
Image from: goodereader.com

9. 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 higher
capacity.

10. Operating System
• Previous: tablets run only on PC operating system only.
• Nowadays: tablets also fit in with variations of smartphone
operating system.
• Examples:
• Google's Android 3.x (Honeycomb): Samsung Galaxy Tab 10.1.
• Apple's iOS: iPad, iPad 2.
• Windows 7 Tablet: Lenovo IdeaPad, Acer Iconia W500.
• WebOS: HP TouchPad.
• BlackBerry Tablet OS: RIM's BlackBerry PlayBook.

11. Sources
 Tablet computer. Wikipedia. Retrieved on March 5th 2012.
 Strickland, J. How Tablet Works. How Stuff Works. Retrieved on
March 5th 2012.
 Grabham, D. 2011. Tablets Operating System Compared: A
Beginner's Guide to the Major Tablet Operating System. Tech Radar.
Retrieved on March 5th 2012.
 Bell, D. 2011. Tablet Buying Guide: Operating Systems. CNET
Reviews. Retrieved on March 5th 2012.
 The Processors Behind the Tablet: Infographic Comparison. Online
Marketing Trend. 2011. Retrieved on March 5th 2012.
 How Do Touchscreen Monitors Know Where You are Touching. How
Stuff Works. Retrieved on March 5th 2012.
 Brain, M. How Gyroscopes Work. How Stuff Work. Retrieved on
March 5th 2012.
 Chef, S. 2011. Inside a Tablet or, What Makes Those Tablets Tick.
Everything About Tablets. Retrieved on March 5th 2012.