Types of Microcomputers

• Desktop PCs:  Case or main housing sits on the desktop.
• Tower PCs:  Case sits in a tower on the floor.
• Notebooks:  also called Laptops, lightweight portable computers with built-in monitor, keyboard, hard-disk drive, battery and AC adapter.
• PDAs:  also called handheld computers or palmtops , combine personal organization tools -schedule planners, address books, to-do lists – with the ability in some cases to send e-mail and faxes.

5 computer types

Email Tips

• Always put a subject line in your message  
• For short messages, that’s all you need
• Send attachments only when necessary
•  Every recipient gets a copy – 
•  For 500 people that’s 500 copies!
•  For a short attachment, copy the text to the email itself instead of sending the attachment
• Don’t open attachments unless you know the sender 
•  It could contain a virus or malware
• Use discretion about sending emails
•  Emails aren’t secret
•  They can be easily forwarded to others
• Check grammar, spelling to bosses, customers
• Don’t use email to express criticism or sarcasm
• Email received at work is the property of your employer
• Deleting email messages does not remove them everywhere
• Don’t neglect real personal contact

Internet, World Wide Web, & Cyberspace

The Telephone Grows Up

• 1973: First cellphone call
• 2006: Nokia estimates 2 billion mobile phone subscribers
• Today’s cellphones:
• Are mobile
• Can take and send pictures
• Can connect to the internet
• Can send and receive text messages

IT used in LIFE

Rules for Computers in Classrooms

Problem: Computers in the classroom can be used or misused.

What should they be used for?

• Following the lecture slides
• Working along with the instructor
• Performing instructor-assigned internet searches
• Completing assignments for this class

What is misuse?

• Text messaging or emailing friends
• Surfing the internet for entertainment
• Doing assignments for other classes