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3A-1 Ergonomics and Input Devices Ergonomics –Study of human and tool interaction –Concerned with physical interaction –Attempts to improve safety and comfort
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3A-2 Ergonomics and Input Devices Repetitive Strain Injury (RSI) –Caused by continuous misuse of the body –Many professions suffer from RSI Carpal Tunnel Syndrome –Carpal tunnel is a passage in the wrist –Holds nerves and tendons –Prolonged keyboarding swells tendons
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3A-3 Carpal Tunnel Syndrome
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3A-4 Ergonomics and Input Devices Office hardware suggestions –Office chairs should have Adjustable armrests and height Armrests Lower back support –Desks should have Have a keyboard tray Keep hands at keyboard height Place the monitor at eye level
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3A-5 Ergonomics and Input Devices Techniques to avoid RSI –Sit up straight –Have a padded wrist support –Keep your arms straight –Keyboard properly –Take frequent breaks
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Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved. McGraw-Hill Technology Education E-mail and Other Internet Services
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2B-7 Using E-mail Exchanges messages with other users –Messages reach destination in seconds –Mail waits in mailbox until opened –Text, audio, pictures and video messages
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2B-8 Using e-mail Configuring e-mail –e-mail clients read and send e-mail –Outlook and Eudora are common Need name of mail server Need username and password –Hotmail and Yahoo are online clients No configuration needed
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2B-9 Using e-mail e-mail addresses –Unique address –Allows sending and receiving –fahad.khan@uettaxila.edu.pkfahad.khan@uettaxila.edu.pk Listserv –Lists of e-mail addresses –Each address gets the e-mail
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2B-10 Using e-mail e-mail actions –Create a new message –Send an attachment –Reply to e-mail –Open attachments –Forward an e-mail
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2B-11 Other Internet Features News –Public board devoted to a topic –Thousands of topics available –Messages are called threads –Users can create threads –Users can comment on threads –Need a news reader program
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2B-12 Other Internet Features File Transfer Protocol (FTP) –Copies files from a remote computer –FTP client is needed –Some sites require a password
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2B-13 Other Internet Features Internet Relay Chat (IRC) –Real time communication system –Multi-users with many channels (rooms) –Channels are dedicated to a topic –All users can read the comments
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2B-14 Other Internet Features Instant messaging (IM) –Private, real-time communication –Message sent only to listed users –Buddy lists contain IM names
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2B-15 Other Internet Services Online services –Company that offers access by subscription –Banks, games and research –America Online offers content and Internet
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2B-16 Other Internet Services Peer-to-peer (P2P) services –User computers are connected together –No centralized organization –Users can communicate directly –Users can share files
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Questions? 17 Question in my mind is ? Should I ask this ? hmmmmmmmmm? Sorry I was sleeping sir !
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If you have any query please feel free to ask Phone: +92-51-9047-592 Fax: +92-51-9047-420 Email: fahad.khan@uettaxila.edu.pk University Of Engineering & Technology Taxila Pakistan
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