CS 324: Introduction to Operating System

Course Information and Syllabus


Class Meetings

Tuesday, Thursday 10:00 am to 11:15 am

Instructor

Instructor:Dr. Clifton Presser
Office:Glatfelter 213
Phone:(717) 337-6639
Email: cpresser@gettysburg.edu
Office Hours: Wednesday 1:00 pm to 3:00 pm
Tuesday, Thursday 1:00 pm to 2:30 pm
Drop in anytime my door is open or make an appointment.

Class web site

You are responsible for checking the class web site regularly. Announcements and assignments will be posted on the Moodle course management system.

Prerequisites

CS 216

Gettysburg Curricular Goals

This course satisfies the Quantitative, Inductive and Deductive Reasoning goal of the Gettysburg Curriculum.

Text

Operating Systems: Three Easy Pieces by Remzi H. Arpaci-Dusseau ,Andrea C. Arpaci-Dusseau, and Peter Reiher. Available free online.

Topics

See the schedule below for more detail.
OS Data StructuresProcess Management
ThreadsScheduling
DeadlocksMemory Management
Input/Output SystemsSynchronization
File SystemsSecurity

Learning Outcomes

Students will..

Course Credit

According to the College Catalog's section on Degree Requirements: "For transfer of credit to other institutions, the College recommends equating one course unit with 4 semester hours." This valuation is in alignment with our 32 course requirement for graduation.

The federal government defines a credit hour as the equivalent amount of work as 50 minutes in class and two hours out of class for one semester.

Therefore, this course should be the equivalent work of three hours and twenty minutes in class and 8 hours outside of class. Since the course meets two and a half hours per week, the assignments include a "fourth hour" item each week.

Attendance Policy

You are expected to attend class regularly and keep up with the assigned material.

Grading Policy

Assignments

Homework will be due at the beginning of class. Late work will be graded with a 20% deduction. Homework turned one week after the deadline will receive no credit. Homework will be graded by the second class meeting or one week after they are submitted, whichever is later. Otherwise, all students who have turned the assignment in on time will receive a 10% bonus.

Unless otherwise specified, all assignments are weighted equally. Some assignments may count double. Such changes will be noted on the assignment specifications.

Classwork

From time to time you will be asked to write programs, complete worksheets, take quizzes, give short presentations, or answer questions in class.

Fourth Hour

Fourth Hour assignments require an additional exercise outside of class meeting times.

Colloquium Attendance

Each student is required to attend at least two Computer Science Colloquia during the semester. If your schedule does not permit you to attend one or more, please see me to discuss an alternative.

Tests

There will be 2 tests during the semester, their dates are given in the schedule below. Make-up tests will only be given under special circumstances. The final exam is cumulative. The date is determined by the registrar.

The tests and the final will be proctored in the classroom.

Grade Distribution

Assignments18%
Fourth Hour15%
Classwork15%
Colloquia2%
Tests30%
Final Exam20%

Grade Ranges

A+98-100A93 - 98A-90 - 92
B+88 - 89B83 - 87B-80 - 82
C+78 - 79C73 - 77C-70 - 72
D+68 - 69D60 - 67Fbelow 60

Honor Code and Honor Code Violations

All Gettysburg College students are expected to abide by the Honor Code. All work in this course is to be done individually unless the instructor specifically states otherwise. This includes assigned projects as well as regular class work. The use of the computer may make it more tempting and easier to pass off another person's work as your own. This is UNACCEPTABLE. The department is always very aggressive about enforcement of the Honor Code.

Guidelines for following the honor code:

Generative AI Tools

Generative AI tools such as ChatGPT can be powerful aids to completing a variety of work. You will undoubtedly use them in your careers. They will likely become the de-facto standard for building computer applications in the future.

In this course, we may employ these tools from time to time, both in class and work you do alone. However, you may not use them for any submitted work unless there are specific instructions to do so. Using these tools on assignments without permission is a violation of the Honor Code.

You should aim to be more than just a communication device between your professor and ChatGPT. You improve your problem solving ability by thinking (practice makes perfect).

You may use AI to...
You may not use AI to...
I may use AI to...
I will not use AI to...
We are responsible for...

If we generate a program using AI tools which contains bugs and errors, they are OUR bugs and errors. If the program infringes a copyright or patent, that is our violation. We are responsible for the consequences that follow.


Calendar

This calendar is subject to change throughout the semester.
Week Day Date Topic Text Notes
1 Tues. 8/25/26 Introduction 2 2
1 Thurs. 8/27/26 System Calls and Interrupts 2  
2 Tues. 9/1/26 Processes 4,5  
2 Thurs. 9/3/26 Processes 4,5,6  
3 Tues. 9/8/26 Scheduling 7  
3 Thurs. 9/10/26 Scheduling 7  
4 Tues. 9/15/26 Scheduling 8,9,10  
4 Thurs. 9/17/26 Memory 13-15  
5 Tues. 9/22/26 Segmentation/Free space 16,17  
5 Thurs. 9/24/26 Test 1 -  
6 Tues. 9/29/26 Paging 18  
6 Thurs. 10/1/26 More Paging 19,20  
7 Tues. 10/6/26 Swapping 21,22,23  
7 Thurs. 10/8/26 Threads 26,27  
8 Tues. 10/13/26 No class - Fall Break
8 Thurs. 10/15/26 Threads 26,27  
9 Tues. 10/20/26 Locks 28-30  
9 Thurs. 10/22/26 Concurrency 31-33  
10 Tues. 10/27/26 Concurrency 31-33  
10 Thurs. 10/29/26 Deadlock 32  
11 Tues. 11/3/26 Deadlock 32  
11 Thurs. 11/5/26 Test 2 - 11/6: Last day to withdraw
12 Tues. 11/10/26 I/O Devices 36  
12 Thurs. 11/12/26 Drives 37-38  
13 Tues. 11/17/26 Files and Directories 39  
13 Thurs. 11/19/26 File Systems 40-43  
14 Tues. 11/24/26 Security 53-54  
14 Thurs. 11/26/26 No class - Thanksgiving Break
15 Tues. 12/1/26 Security 55-56  
15 Thurs. 12/3/26 Review -  
16 Tues. 12/8/26 Final Exam - 1:30 to 4:30 pm

Please send questions and comments to: cpresser@gettysburg.edu