Chap 5 Input - Chapter 5 Input & Input Technology Input...

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    Chapter 5 Input & Input Technology
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    Input Input  Any data or instructions entered into the memory  of a computer Data Raw unorganized facts, figures, symbols Instructions Program - a series of instructions that tells the computer  how to perform a task Command - an instruction given to a computer program User response – a response to a question or message  from the software
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    Input Device Input device Any hardware  component that  allows you to enter  data,  programs,  commands,  and user  responses  into a computer
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    Input Devices The Keyboard A keyboard is usually the primary input device There is no standard computer keyboard Keyboards contain Typing area Numeric keypad Arrow keys  Function keys Special keys Toggle keys Status lights
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    Input Devices The Keyboard Keyboard Types QWERTY First 6 keys on the top row Designed in the 1800’s 84 keys Enhanced keyboards 101 or 102 keys Wireless keyboards Transmission using wireless technology Notebook and handheld keyboards Built-in to the system unit Portable keyboard Ergonomic keyboards Designed to be safe and comfortable
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    The QWERTY Keyboard Named for the letters in the top row of letters in  the typing area Designed by Christopher Latham Sholes of  Milwaukee. In 1867, Christopher Latham Sholes, Carlos  Glidden, and Samual W. Soule invented what  they called the Type-Writer QWERTY layout  dates to about 1874 Read  more about QWERTY
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    Input Devices Pointing Devices Pointing Devices Input devices that allow you to control a pointer on the  screen Types of pointers Block arrow I-beam Pointing hand Mouse Mechanical, optical, wireless Trackball Like a mouse, but stationary and the ball is on top Especially useful when space is limited I-beam Block arrow Pointing hand
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    Input Devices Pointing Devices Touchpad Flat, rectangular pointing  device that is sensitive to  pressure and motion Often used with notebook  computers Pointing stick Pressure sensitive pointing  device shaped like a pencil  eraser Moves pointer as pressure is  applied Often used on notebook  computers
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Chap 5 Input - Chapter 5 Input & Input Technology Input...

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