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What are these things?

What are these things?. Look Closely. Take a Guess. Any New Ideas?. The Future. Ladies & Gentlemen, Congratulations! You've just now looked into the future...Yes that's right! You've seen something that would replace your PC in the near future.... NOW SEE THIS!!!.

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What are these things?

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  1. What are these things?

  2. Look Closely. Take a Guess.

  3. Any New Ideas?

  4. The Future • Ladies & Gentlemen, Congratulations! You've just now looked into the future...Yes that's right! You've seen something that would replace your PC in the near future.... NOW SEE THIS!!!

  5. In the revolution of miniature computers, the scientists are ahead with BLUETOOTH technology... See the forthcoming computers within your pockets.

  6. This pen sort of instrument produces both the monitor as well as the keyboard on flat surfaces from where you can just carry out the normal operations you do on your desktop.

  7. RELEASE DATE: February 1, 2006

  8. INPUTS Intro to Computer Technologies

  9. Objectives • Upon completion of this lesson, students will be able to: • Identify all input plug ins on computer • Describe what a peripheral is • Explain what Ergonomics is

  10. What is an Input Device? • All hardware devices that make a connection and sends information to the CPU are called peripheral devices. • Without any peripheral devices a computer would simply be a display device and not allow users to interact with it, much like a TV. • Input can take a variety of forms

  11. Examples of Hardware Peripherals • Track Balls • Light pens • Modems • Graphics Tablets • Speech Recognition Devices • Keyboard • Mouse • Joystick • Microphone • Scanner • Touch Sensitive Screens

  12. Keyboards • The most frequently used input device • Used to enter instructions and data via keys. • Most keyboards have between 80 and 110 keys, including: • Typing keys • A numeric keypad • Function keys • Control keys • When a key is pressed, a microprocessor in the keyboard interprets the signal generated as a digital code that can be sent to the computer.

  13. QWERTY??? • First 6 letters of your keyboard • All 26 letters were arranged to make typing more difficult • Typewriter in 1873 • Originally arranged alphabetically • Keys would stick or jam when struck in succession. • Made the job of typing as slow as possibly • Placed the most frequently used keys as far apart from each other.

  14. Ironic • Every other aspect of your computer is streamlined for maximum efficiency • You are typing on a 134 year old system designed specifically for inefficiency • Why didn’t they try to change it? • They did, but we were used to the Qwerty Board. Society would not adapt.

  15. DVORAK Simplified Keyboard • Currently, all major Operating Systems (such as Apple OS X, Microsoft Windows, GNU/Linux and BSD) ship with Dvorak keyboard layout.

  16. Handling a Keyboard • Always turn the computer off before plugging in or unplugging a keyboard. • Failing to do so can seriously damage the motherboard • Computer is constantly scanning for the state of the keyboard. PS/2 connector USB Connectors

  17. Ergonomic Problems

  18. Ergonomics • Ergonomic keyboard designs are intended to keep a person's hands in a more natural position while typing in an attempt to prevent injuries • Form, Fit, Function

  19. Optimus • Programmable hot keys

  20. Mouse • Developed in 1968, widely used in 1980’s. • Includes a case that fits the hand • Needs a software program to tell how to relate it to the physical hardware movement to an on-screen pointer • Control buttons The First Mouse

  21. Purpose of a Mouse • The main goal of any mouse is to translate the motion of your hand into signals that the computer can use. • A ball inside the mouse touches the desktop and rolls when the mouse moves.

  22. Optical Mouse • Uses a tiny camera to take thousands of pictures every second • Works on virtually any surface • Uses light-emitted diode (LED) or lasers • Resolution- # of pixels per square inch • 400 or 800 dpi • Gamers buy 1600 dpi

  23. Benefits of Optical Mouse • No moving parts means less wear and a lower chance of failure. • No way for dirt to get inside the mouse and interfere with the tracking sensors. • Increased tracking resolution means a smoother response. • They don't require a special surface, such as a mouse pad.

  24. Flatbed Scanners • AKA. Desktop scanners • The basic principle of a scanner is to analyze an image and process it in some way. • Larger versions have a flat bed, like that of a photocopier, on which the input document is placed and scanned. • Image and text capture (optical character recognition or OCR) allow you to save information to a file on your computer.

  25. Scanners • Scanners Produce a digital image of a document for input and storage in a computer • You can then alter or enhance the image, print it out or use it on your Web page. • Resolution = dots per inch, the more dpi’s the better the quality

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