Questions about computing concepts and other general inquiries

Hardware Software Storage Displays Laptops Internet The Web E-mail General		General Questions: Should I turn off my computer or put it to sleep? Can someone hack into my computer if it is not connected to the Internet? What does the "NT" stand for in Windows NT? Where is the backslash key located on my keyboard? What is the difference between functional and technical obsolescence? What is the difference between bits and bytes? What are kibibytes, mebibytes, and gibibytes? Which takes up more disk space - images or text? How many pages of text will one megabyte hold? Can I network a Macintosh and Windows PC together? What are some of the main reasons why my computer is slowing down? What is the difference between Bluetooth and Infrared technology? What is the difference between Hibernate and Standby in Windows XP? When should I turn off my computer and when should I put it to sleep? What are kilobytes, megabytes, and gigabytes? What does a server do? What is the difference between a PDF and a JPEG file? What is the difference between analog and digital technology? Is it possible to convert a raster graphic into a vector graphic? What is the difference between vector and raster graphics? Which is faster -- Kbps or Mbps? Any advice on buying a new computer? Why are there 1024 bytes in a kilobyte? What is Copy and Paste and how does it work?