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Lesson_02

# Lesson_02 - Computer Literacy BASICS A Comprehensive Guide...

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Computer Literacy BASICS: A Comprehensive Guide to IC 3 , 3 rd Edition Lesson 2: Input, Output, and Processing Our latest online feature, CourseCasts, is a library of weekly podcasts designed to keep you up to date with the latest in technology news (only 5 minutes). Go to http://coursecasts.course.com , where you can download the most recent CourseCast onto your mp3 players, or just view using Windows Media Player. This podcasts provides information on technology and sorts through and aggregates the most pertinent news and information for CourseCasts so you can spend your time enjoying technology, rather than trying to figure it out. L L e e s s s s o o n n O O b b j j e e c c t t i i v v e e s s Students will have mastered the material in Lesson 2 when they can: Identify and describe standard and specialized input devices. Identify and describe standard and specialized output devices. Identify and describe how input and output devices are connected to the computer. Consider computer performance factors D D a a t t a a F F i i l l e e s s No data files needed to complete this lesson. M M o o d d 1 1 - - 2 2 8 8 : : I I n n t t r r o o d d u u c c t t i i o o n n Input, which is data or instructions, must be entered into the computer and then stored on a storage media device. To turn the data into information, the CPU processes the data. After data is processed, it is “presented” to the user through an ou tput device. CLASSROOM ACTIVITIES 1. Quick Quizzes: 1) ____ is the data or instructions entered into a computer. Answer: Input 2) The ____ processes data to turn it into information. Answer: CPU 3) After data is processed it is “presented” to the user through a(n) ____. Answer: output device M M o o d d 1 1 - - 2 2 8 8 : : S S t t a a n n d d a a r r d d I I n n p p u u t t D D e e v v i i c c e e s s Input devices enable you to enter data and commands into the computer. Keyboard Most commonly used input device. Besides a traditional keyboard, popular types include: ergonomic, cordless or wireless, specialized, security, foldable or flexible, and laser virtual

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keyboard. Pointing Devices An input device that allows you to position the pointer on the screen. Mouse Most commonly used pointing device. Types include: mechanical, optomechanical, optical, wireless. Trackball A pointing device that works like a mouse turned upside down; the ball is on top, operated by your thumb and fingers. Touchpad Common feature on laptops; a specialized surface that converts the motion and position of your fingers to a position on the screen. Pointing Stick A pressure-sensitive device located on the keyboard of many notebook computers and moved with the forefinger. Audio Input
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Lesson_02 - Computer Literacy BASICS A Comprehensive Guide...

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