1. Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. 1-1 Welcome to: CSC225 Introduction to Computer Organization Paul Hatalsky Julie Workman

2. Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. 1-2 Where this class fits in Transistors Logic Implementation Computer Organization Instruction Set Architectures Input/Output Interfaces Assembly Programming Compiler High-Level Language 101,102,103 129 229 225 430,431 315 Note: This should be a 3-dimensional picture to show depth of details.

3. Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. 1-3 Introduction to the World of Computing Computer: electronic genius? NO! Electronic idiot! Does exactly what we tell it to, nothing more. Goal of the course: You will be able to write programs in C and understand what’s going on underneath. Approach: Build understanding from the bottom up on the LC-3! Bits  Gates  Processor  Instructions  C Programming 129315 225

4. Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. 1-4 Why are we learning this stuff??? Abstraction Productivity enhancer – don’t need to worry about details… Can drive a car without knowing how the internal combustion engine works. …until something goes wrong! Where’s the dipstick? What’s a spark plug? Important to understand the components and how they work together. Hardware vs. Software It’s not either/or – both are components of a computer system. Even if you specialize in one, you should understand capabilities and limitations of both. Must at least learn characteristics of both if not details Because we should know…

5. Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. This is the LC-3! 1-5

6. Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. 1-6 Will learning the LC-3 teach me anything about a real computer? All computers, given enough time and memory, are capable of computing exactly the same things. == PDA Workstation Supercomputer

7. Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. 1-7 Course Outline Bits and Bytes How do we represent information using electrical signals? Digital Logic How do we build circuits to process information? Processor and Instruction Set How do we build a processor out of logic elements? What operations (instructions) will we implement? Assembly Language Programming How do we use processor instructions to implement algorithms? How do we write modular, reusable code? (subroutines) I/O, Traps, and Interrupts How does processor communicate with outside world? C Programming How do we write programs in C? How do we implement high-level programming constructs?

8. Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. 1-8 Welcome! Class Organization Two midterms Written final Grading Homework – 0% Labs – 30% Midterms – 20% each Written Final – 30%

9. Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. 1-9 Policies Late Policy – No late labs. Turn in what you have. Plagiarism Lab write-ups are individual (unless I specifically allow partners) You may not look at someone’s working code. No one else may type anything into the code. Discuss concepts and implementation strategies all that you want.

10. Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. 1-10 Policies Homework Work together if you wish, but TRY the problem yourself before you get help. Good way to study for tests. At least one question per midterm will come directly from the homework. Exams 2 Midterms – 1 side of 1 page (8.5 x 11) handwritten notes 1 Written Final – 2 sides of one page of handwritten notes (the final may have an on computer portion).

11. Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. 1-11 Lab Write-ups Answer Questions Include Specified Code Code must be well commented Please print code in a Courier-esqe font Cover Page (See Polylearn for an Example) Lab Number Your name Date Place to sign that says you did the work yourself Demo signature line (for me) Be Professional!!!

12. Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Questions??? 1-12 Let’s talk about binary and hexidecimal… 1001 1101 0010 0101 9D25