Hard disk “This is large-capacity permanent storage used to hold information such as programs and documents.” -Tyson. How PCs Work.
Sound Card “This is used by the computer to record and play audio by converting analog sound into digital information and back again.” -Tyson. How PCs work.
Scanner “A device that reads data and inputs it to the computer…” -Wilson.
Ports Slots or spaces “on the outside of a computer to attach external devices such as printers, scanners, tape backup drives, removable CD-ROM or floppy-disk drives.” -Wilson. Ethernet USB Serial
LAN Local Area Network –Network covering a small geographic area
Binary Computers think in binary code All data is represented in 0s and 1s. This means every character (textual or numeric) must be converted to binary code to be processed by a computer. Additional reading –http://theproblemsite.com/codes/binary.asphttp://theproblemsite.com/codes/binary.asp
ASCII American Standard Code for Information Interchange Additional reading for next week –http://webopedia.com/TERM/A/ASCII.htmlhttp://webopedia.com/TERM/A/ASCII.html
Networking Basics A network is a group of 2 or more computer systems linked together –LAN –WAN http://webopedia.com/TERM/n/network.ht mlhttp://webopedia.com/TERM/n/network.ht ml Additional reading –http://webjunction.org/do/DisplayContent?id=9 29http://webjunction.org/do/DisplayContent?id=9 29
Troubleshooting A single workstation produces an error message as soon as it is turned on, at the beginning of boot up. Could it be: –Workstation CPU –Workstation hard disk –Workstation monitor –Hub –Server
Troubleshooting A single workstation sounds like it is booting up, but the screen remains blank. Could it be: –Workstation CPU –Workstation disk storage –Workstation monitor –Hub –Server
The Internet Global computer network made up of smaller networks using common protocols
intranet Web site internal to an organization, limited to local access and contained within a firewall.
Bandwidth Width of the pipe. The amount of data that can be sent at once.
Firewall Software that blocks access and protects a network or PC