Introduction to Digital Systems

I.     Course Prefix/Number: ENG 250

       Course Name: Introduction to Digital Systems

       Credits: 4 (3 lecture; 2 lab)

II.    Prerequisite

MAT 250 or concurrent enrollment.

III.   Course (Catalog) Description

Course introduces computer engineering. Content includes representation of information; binary system; Boolean algebra; switching circuits, combinational switching circuits, and sequential switching circuits; macro-circuits; and wired and stored program processor concepts. Lab work required. Intended for transfer to electrical and computer engineering programs.

IV.   Learning Objectives

To understand the foundations of digital design and analysis resulting in the following outcomes:

  • Understand Boolean algebra and the synthesis of logic expressions.
  • Understand the fundamental logic gates (e.g. NOT, AND, OR, NOR, NAND) and their truth tables.
  • Be able to simplify logic expressions (e.g. Karnaugh maps, Quine-McClusky, etc.)
  • Understand the various types of latches and flip-flops and their use in sequential logic.
  • Know how to design, build, and test both combinational and sequential logic circuits to implement a logic function (half-adder, full-adder, multiplexer/demultiplexer, encoder/decoder, counter, shift register, etc.)
  • Understand the limitations of practical logic gates (e.g. timing requirements, propagation delay, fan-in, fan-out, input margins, etc.)
  • Be able to identify hazards in logic circuits.

V.    Academic Integrity and Student Conduct

Students and employees at Oakton Community College are required to demonstrate academic integrity and follow Oakton's Code of Academic Conduct. This code prohibits:

• cheating,
• plagiarism (turning in work not written by you, or lacking proper citation),
• falsification and fabrication (lying or distorting the truth),
• helping others to cheat,
• unauthorized changes on official documents,
• pretending to be someone else or having someone else pretend to be you,
• making or accepting bribes, special favors, or threats, and
• any other behavior that violates academic integrity.

There are serious consequences to violations of the academic integrity policy. Oakton's policies and procedures provide students a fair hearing if a complaint is made against you. If you are found to have violated the policy, the minimum penalty is failure on the assignment and, a disciplinary record will be established and kept on file in the office of the Vice President for Student Affairs for a period of 3 years.

Please review the Code of Academic Conduct and the Code of Student Conduct, both located online at

VI.   Sequence of Topics

  • Binary math operations
  • Define logic gates and their symbols
  • Boolean Algebra
  • Logic and state transitions
  • Sequential logic
  • Basic computer organization and register transfer logic
  • I/O implementations
  • Microprocessor programming
  • Computer logic design

VII.  Methods of Instruction

Lecture, group problem solving, and lab work.
Course may be taught as face-to-face, hybrid or online course.

VIII. Course Practices Required

  1. Passing three examinations (a make-up exam. will only be given if medical reasons precluded taking the exam on the date scheduled).
  2. Satisfactory completion of homework problems within the assigned time schedule.

Course may be taught as face-to-face, media-based, hybrid or online course.

IX.   Instructional Materials

Note: Current textbook information for each course and section is available on Oakton's Schedule of Classes.

Computer Engineering Hardware and Design, by Mano, Prentice-Hall

Individual lab kit, to be purchased by student.

X.    Methods of Evaluating Student Progress

Achievement of course objectives are determined from the submitted homework, completion of lab work, and three exams.

XI.   Other Course Information

Consider engaging in opportunities to explore STEM careers, and build experiences in STEM. Information is available online at Contact Gloria Liu (, 847-635-1738) for more information.

If you have a documented learning, psychological, or physical disability you may be entitled to reasonable academic accommodations or services. To request accommodations or services, contact the Access and Disability Resource Center at the Des Plaines or Skokie campus. All students are expected to fulfill essential course requirements. The College will not waive any essential skill or requirement of a course or degree program.

Oakton Community College is committed to maintaining a campus environment emphasizing the dignity and worth of all members of the community, and complies with all federal and state Title IX requirements.

Resources and support for
  • pregnancy-related and parenting accommodations; and
  • victims of sexual misconduct
can be found at

Resources and support for LGBTQ+ students can be found at

Electronic video and/or audio recording is not permitted during class unless the student obtains written permission from the instructor. In cases where recordings are allowed, such content is restricted to personal use only. Any distribution of such recordings is strictly prohibited. Personal use is defined as use by an individual student for the purpose of studying or completing course assignments.

For students who have been approved for audio and/or video recording of lectures and other classroom activities as a reasonable accommodation by Oakton’s Access Disabilities Resource Center (ADRC), applicable federal law requires instructors to permit those recordings. Such recordings are also limited to personal use. Any distribution of such recordings is strictly prohibited.

Violation of this policy will result in disciplinary action through the Code of Student Conduct.