Introduction CMSC 104 Spring 2000 Problem Solving and

Introduction CMSC 104 Spring 2000 Problem Solving and Computer Programming CMSC 104 1

Am I in the right class? l CMSC 104 o Assumes NO programming experience o Does NOT count towards your CS major o Prepares you for CMSC 201 l CMSC 201 o Assumes some programming experience o First CMSC course for CS majors o More challenging CMSC 104 2

Getting a GL Account at UMBC l You MUST have a GL account Go to room ECS 005 (in the basement) l Sign-on to one of the PCs there l o Type in the word register as the Login ID o No Password o Follow the instructions l CMSC 104 Your account can be used in 24 hours 3

Changing your Unix password Login by entering your id and password given on the sheet l At the Unix prompt type: passwd <Return> l You will be prompted for your new password; type it in and press <Return> l You will be asked to type the new password again l CMSC 104 4

Changing your Unix password (continued) You will be given a message that the password has been changed l OR you will be given a message that rejects your new password l Passwords should be at least 5 characters long, should be something you will remember. l Your password will be rejected if it is a CMSC 104 commonly used word or name l 5

Computer Science at UMBC l CSEE Administrative Offices o ECS 210 l CSEE Student Services Office o ECS 201 l CSCM (Sea Scum) o Computer Science Council of Majors l CSHC (Computer Science Help Center) o ECS 332 In the Mechanical Engr Dept. CMSC 104 6

UCS Labs University Computing Services are responsible or all the computers l 24 hour labs l o ECS 021 -- IBMs, MACs l Open Labs o ECS 005 -- SGI Workstations o ECS 104 -- IBMs (but not 104 A) o ECS 122 A -- IBMs l CMSC 104 Print Dispatch -- ECS 019 ($$) 7

UCS Labs (Cont'd) l Open, but sometimes reserved o ECS 333 -- IBMs o ECS 336 - MACs l Hours of Operations o Monday - Thursday o Friday o Saturday o Sunday CMSC 104 7 AM - 3 AM 7 AM - Midnight 8 AM - Midnight Noon - 3 AM 8

Consultants vs Tutors l UCS Labs are staffed by consultants o o o l using software (pine, xrn, netscape, etc. ) some text editors (emacs, pico) operating system commands (Unix) cleaning floppy disks communicating with UMBC computers CSHC is staffed by tutors o Help with homework and projects o emacs and Unix questions o ECS 332 -- Hours to be announced CMSC 104 9

telnet Connect to your Internet Service Provider (ISP) l Windows 95/NT/98 l o Start o Run o telnet gl. umbc. edu CMSC 104 10

Hardware & Software Needs l Do I need my own computer? o No, but it is more convenient for you l If I have my own computer, can I use it? o Sure, but you will using it mostly to login to your GL account or for word processing l Do I need a C Compiler? o No, and if you buy one, you will be wasting your $$$. All programming should be done in your GL account. CMSC 104 11

Course Overview l l l l Introduction to Computer Organization and Architecture Data Representation and Memory Usage Introduction to Operating Systems Problem Solving and Algorithm Development Introduction to Software Engineering Using Top. Down Design Compiling, Linking and Execution C Programming Reuse Based on Algorithm Selection and Design Techniques CMSC 104 12