Computers and Society IST 2710 Section 006 Class #4: 1/30/08

1/30/08Computers and Society, Class 422 Topics If you fall behind in homework and/or labs Converting numbers with Calculator File path, seeing your files Lab period

1/30/08Computers and Society, Class 433 Starting Off #1 No attendance sheet this week – if you hand in a Quiz, I will take it for granted that you were here. Pick up copies of oLab and Assignment

1/30/08Computers and Society, Class 441/30/084 Quiz 1 Quiz 1: Some people missed it, so there will be a makeup. Once there is a makeup, anyone who wants to retake the Quiz (a different version) can do so, if they let me know, so that I will have a copy. Probably 5 – 6 PM in two weeks (2/13).

1/30/08Computers and Society, Class 45 If You Fall Behind Starting next week, if you are two or more weeks behind on the homework or the labs, you must stay for the full class to get full attendance credit for that class. oBeing able to leave early is to work on the labs somewhere else oIf you are behind and leave, you will get 50% attendance credit for that class 5

1/30/08Computers and Society, Class 46 Converting Binary ↔ Decimal #1 Calculator does it! oStart > Programs > Accessories > Calculator oMake sure that View is Scientific, not Normal dec = decimal, bin = binary oPut Calculator in “from” mode, type number, click “to” mode Examples: oConvert 1101 binary to decimal oConvert 57 decimal to binary 6

1/30/08Computers and Society, Class 47 Converting Binary ↔ Decimal #2 Do binary addition Convert 111 and 10 and answer to decimal, check value Binary addition, also multiplication, give same answer as decimal Do binary multiplication 111 x 11 Convert 111 and 11 and answer to decimal, check value 7

1/30/08Computers and Society, Class 48 Managing Your Files File path – how to find your file oFile path example: c:\My Documents\Computers\Lab1.docx oWhat do the parts mean? From broad to particular All the way on the left, drive All the way on the right – dot separates extension on right of dot from name on the left of the dot Everything else is folders  folder, sub-folder, sub-sub-folder, etc. 8

1/30/08Computers and Society, Class 49 Tools for Seeing Your Files My Computer – desktop icon or Start oClick Folders button, click on a folder to see its contents oFolder can hold folders and files oFolders do not have information, only files do Windows Explorer – Start > Programs > Accessories > Windows Explorer “Keep your file safe tonight Walk the path from left to right” 9

1/30/08Computers and Society, Class 410 Internet “IP Address” – identifies every computer connected to the Internet oExample: oInformation travels over the Internet in “packets” Head – what is in it Tail – the information itself oAll packets are sent from one IP address to another

1/30/08Computers and Society, Class 411 Internet One type of computer on the Internet – a server, or source of information – has, in addition, a domain name oDomain -.com..gov,.edu,.mil,.net oDomain Name – a name that ends with a Domain Example: server for the website for this course

1/30/08Computers and Society, Class 412 Internet URL: Universal Resource (file) Locator oIdentifies the file you are asking for oExample: oParts: - the method, how to deliver the file (HyperText Transport Protocol) Domain Name of server (source), up to first slash After that, the path on the server to that file (the drive is set by the Server Administrator)

1/30/08Computers and Society, Class 413 World Wide Web & World Wide Web and are Internet Applications that use the Internet for transporting information Internet started around 1945, WWW 1993 Internet Application You

1/30/08Computers and Society, Class 414 World Wide Web Four ways to get to a web page: 1.Type in the URL 2.Click on a link 3.History List 4.Favorite (Internet Explorer) or Bookmark (all others, such as Firefox, Mozilla, Netscape, etc. – there are ~ 50)

1/30/08Computers and Society, Class 415 World Wide Web Many ways to use the web: oResearch oTravel oShopping o oSocial Networking oJob Hunting (watch for job site web page) oOnline education

1/30/08Computers and Society, Class 416 World Wide Web Online Courses oWebsite for handouts oUpload and download assignments (works like attachments) oGenerally reading is from a textbook oOnline discussion – the star of the show Not a chat, where everyone has to be logged in at the same time You log in, see what others posted, respond Next persons sees your postings also

1/30/08Computers and Society, Class 417 World Wide Web Online communications style oMore informal oCan overreact oNetiquette rules listed in book oAbbreviations – in book Example: POS

1/30/08Computers and Society, Class 418 Now, Lab 4