CS 140 Course Information


Lectures are Mondays, Wednesdays, and Fridays from 12:15-1:05 in Building 370, Room 370. Lecture notes are available in advance and provide an outline for much of the material that will be presented in class; I recommend that you print out the notes and bring them to class so you can mark them up with additional notes during lecture.

I recommend against using laptop computers during class. Although some people prefer taking notes on a laptop instead of by hand, educational studies have shown that students using laptops tend to learn less effectively than those without laptops: there are too many distractions available on an open computer.


There is no required textbook for this class: the material of the course is defined by the lectures and does not exactly correspond to any existing book. However, I recommend the following book if you would like an additional source of material to supplement lectures:

Each page of lecture notes lists related readings in this book at the front of the notes page.


The class will have two discussion sections that meet four times over the course of the quarter, once for each project. The purpose of the sections is to introduce the projects and provide additional material that may be relevant as you work through the projects. See the projects page for the times and locations for the sections. The sections for each project will cover the same material, but they will be taught by different CAs so there may be some differences in presentation or style; you can attend either section or both.


The class includes four programming projects based on the Pintos operating system, plus one problem set. The Pintos projects involve a significant amount of work (as much as 10-20 hours per week, according to students who have taken the class), so it's best to take CS 140 in a quarter where your other course load is lighter than normal. You must work on the Pintos projects in teams of two or three. It's very important to find team members that you can work well with; if you can't find a good team to join, you may be better off waiting to take the course at a later time.

Late Days

Each student is allowed a total of 3 late days for this class, which may be spent in units of one day (24 hours) on any project(s) throughout the quarter. Once your late days have been used up, late work will not receive any credit. Late days are intended to handle all issues, including unexpected problems such as illness. Note: most students find Project 3 to be particularly difficult; don't use up all your late days before this project!


The class will have a midterm exam during the sixth week (May 5-9) and a final examination during exams week. You may bring two double-sided 8.5x11" pages of notes with you to the midterm and three double-side pages of notes to the final exam; other than that, exams are closed-book.

Grading Policy

Grades for the class will be determined based on a 100-point total score computed as follows:

Problem Set5points

Honor Code

As in all Stanford classes, you are expected to follow the Stanford Honor Code. For example, the following activities are prohibited and will be treated as Honor Code violations (this is not intended to be a complete list of Honor Code violations):

We reserve the right to use computer software such as MOSS to analyze material that you submit in order to detect duplication with other students or existing solutions.

Students with Documented Disabilities

Students who may need an academic accommodation based on the impact of a disability must initiate the request with the Student Disability Resource Center (SDRC) located within the Office of Accessible Education (OAE). SDRC staff will evaluate the request with required documentation, recommend reasonable accommodations, and prepare an Accommodation Letter for faculty dated in the current quarter in which the request is being made. Students should contact the SDRC as soon as possible since timely notice is needed to coordinate accommodations. The OAE is located at 563 Salvatierra Walk (phone: 723-1066).