1. CMSC 104, Version 8/061L01Introduction.ppt Introduction CMSC 104 Problem Solving and Computer Programming

2. CMSC 104, Version 8/062L01Introduction.ppt Am I in the Right Class? CMSC 104 o Assumes NO programming experience o Does NOT count towards your CS major o Prepares you for CMSC 201 CMSC 201 o Assumes some programming experience o First CMSC course for CS and CE majors o Also required for IFSM majors o More challenging

3. CMSC 104, Version 8/063L01Introduction.ppt What Will We Cover? General computer hardware and software concepts Basic computer use Problem solving Basic computer programming in the C programming language

4. CMSC 104, Version 8/064L01Introduction.ppt General Hardware and Software Concepts Introduction to computer architecture Data representation and memory usage Introduction to the Linux operating system used in the CMSC104, CMSC201, and CSMC202.

5. CMSC 104, Version 8/065L01Introduction.ppt Basic Computer Use Basic use of an operating system (Linux) e-mail (pine and myUMBC) a text editor (pico and xemacs) the Internet (Mozilla, Netscape and/or Internet Explorer)

6. CMSC 104, Version 8/066L01Introduction.ppt Problem Solving Problem solving and algorithm development general vs. specific solution to a problem use of top-down design use of pseudocode

7. CMSC 104, Version 8/067L01Introduction.ppt Basic Computer Programming in the C Programming Language Compiling, linking, and executing a computer program Testing a computer program C programming language basics

8. CMSC 104, Version 8/068L01Introduction.ppt Syllabus On the Web, you can get the syllabus in Blackboard. Follow links to syllabus. Refer to it throughout the semester. More specific information, such as changes to due dates, etc are given on Blackboard.

9. CMSC 104, Version 8/069L01Introduction.ppt Getting a GL Account at UMBC You MUST have a GL account (if you can receive email at UMBC, you have the account.) Go to room ECS 020 (in the basement) and ask at the desk, OR Using the Internet, go to: accounts.umbc.edu (NO www.) Your account can be used in approximately ½ hour.

10. CMSC 104, Version 8/0610L01Introduction.ppt Changing Your Linux Password Log in by entering your ID and password given on the sheet. This password is a random combination of letters and numbers that are not easy to remember. You need to select a new password! o It must be easy to remember! o It can not be a name! o It can not be in a dictionary! o It is recommended that you include digits, and special characters.

11. CMSC 104, Version 8/0611L01Introduction.ppt Changing Your Linux Password (con’t) At the Linux prompt type: passwd and press the Enter key. You will be prompted for your new password; type it in (you won’t be able to see it) and press the Enter key. You will be asked to type the new password again.

12. CMSC 104, Version 8/0612L01Introduction.ppt Changing Your Linux Password (con’t) You will be given a message that the password has been changed, OR you will be given a message that rejects your new password, Passwords should be at least 5 characters long and should be something you will remember. Your password will be rejected if it is a commonly used word or name.

13. CMSC 104, Version 8/0613L01Introduction.ppt Computer Science at UMBC CSEE Offices o ITE325 CSEE Advising o ITE202-206 CSHC (Computer Science Help Center) o ECS 332 In the Mechanical Engineering Dept. Linux Users Group (LUG) o http://linux.umbc.edu http://linux.umbc.edu

14. CMSC 104, Version 8/0614L01Introduction.ppt OIT Labs The Office of Information Technology is responsible for all lab computers. On Web at: www.umbc.edu/oit Labs: o ECS 021 -- PCs, MACs, SGI Workstations o ECS 104 -- PCs o ECS 104A -- SGI Workstations o ECS 122/122A -- PCs o ECS 333 -- PCs o ECS 336 – MACs Labs may be on reserve so plan ahead!

15. CMSC 104, Version 8/0615L01Introduction.ppt Using The Printer Get your print-out at ECS 019. 10 cents/page. Best to print at home.

16. CMSC 104, Version 8/0616L01Introduction.ppt Consultants vs. Tutors OIT labs are staffed by consultants using software (pine, Netscape, etc.) some text editors (xemacs, pico) operating system commands (Linux) cleaning floppy disks (viruses) communicating with UMBC computers

17. CMSC 104, Version 8/0617L01Introduction.ppt Consultants vs. Tutors (con’t) CSHC is staffed by student tutors Help with homework and projects xemacs and Linux questions Go to their web site for more details. http://www.csee.umbc.edu/~cshc/

18. CMSC 104, Version 8/0618L01Introduction.ppt Hardware and Software Needs Do I need my own computer? o No, but it is more convenient for you. If I have my own computer, can I use it? o Sure, but you will use it mostly to log in to your GL account or for word processing. Do I need a C Compiler? o No. Some students get one, but remember all programs are graded using the GL account. If you get one, make sure you test it on your GL account before turning the assignment in.

19. CMSC 104, Version 8/0619L01Introduction.ppt Using Your Own Computer: ssh Connect to your Internet Service Provider (ISP) If using Windows 95/NT/98/2000/XP, o Click Start o Click Run o Type: ssh linux.gl.umbc.edu Consult OIT for help

20. CMSC 104, Version 8/0620L01Introduction.ppt Using Your Own Computer: ssh If using Linux, ssh is already available to you. o Log-in using: ssh –X –l linux.gl.umbc.edu o In place of, use your own login ID.

21. CMSC 104, Version 8/0621L01Introduction.ppt ssh UMBC has disabled telnet as a way of communicating with our computers. Now you must use ssh instead. If you don’t have it, get the UMBC CD from ECS020 (or download it from http://www.umbc.edu/oit/software/pages/TermSSH.htm ) and install Tera Term on your Windows based computer. (P.S. There is more free software for UMBC students to download, check it out.) http://www.umbc.edu/oit/software/pages/TermSSH.htm