Computer Education

INTERNET
Uses of the Internet
Internet Access
How Information Travels Over the Internet
Network Names and Addresses
Client/Server Architecture
Electronic Mail and News Groups
Other Internet Applications
Bandwidth
History
The Future of the Internet

Computer Memory
Internal RAM
Internal ROM
External Memory
Magnetic Media
Optical Media
Magneto-Optical Media
Cache Memory

HISTORY
Beginnings
First Punch Cards
Beginnings
Precursor to Modern Computer

TYPES OF COMPUTERS
Digital and Analog
Range of Computer Ability

NETWORKS

PROGRAMMING LANGUAGES
Machine Language
Assembly Language
High-Level Languages
FLOW-MATIC
FORTRAN
BASIC

HOW COMPUTERS WORK
Operating System
Computer Memory
Bus
Input Devices
Central Processing Unit
Output Devices

HOW A CPU WORKS
INTRODUCTION
Function
Branching Instructions
Clock Pulses
Fixed-Point and Floating-Point Numbers

HISTORY
Early Computers
Transistor
The Integrated Circuit

Network Names and Addresses


To be connected to the Internet, a computer must be assigned a unique number, known as its IP (Internet Protocol) address. Each packet sent over the Internet contains the IP address of the computer to which it is being sent. Intermediate routers use the address to determine how to forward the packet. Users almost never need to enter or view IP addresses directly. Instead, to make it easier for users, each computer is also assigned a domain name; protocol software automatically translates domain names into IP addresses. For example, the domain name encarta.msn.com specifies a computer owned by Microsoft (names ending in .com are assigned to computers owned by commercial companies), and the corresponding IP address is 207.46.228.91. See also Domain Name System.

Users encounter domain names when they use applications such as the World Wide Web. Each page of information on the Web is assigned a URL (Uniform Resource Locator) that includes the domain name of the computer on which the page is located. Other items in the URL give further details about the page. For example, the string http specifies that a browser should use the http protocol, one of many TCP/IP protocols, to fetch the item.

auuuu.com