Lecture (LDigital)

Digital circuits are used by computers as a very efficient way to manipulate numbers, letters, pictures, sound, and more.  Digital values work with voltages that are either 'on=1' or 'off=0', so circuits are just combinations of switches that can be built into very large scale integrated circuits (the basis of your computer).  This lecture will cover the basics of analog and digital, and the basic logic gates (and, or, xor, nand, not) that can be used to manipulate digital voltages.

There is no textbook section for this lecture.  This material will not be on the exam, but it will be used in the labs, and you may choose to try it out in your final project ( a sensor system of your choosing).  You will learn more about digital electronics in your later ECE courses.

Watch this video before class:

http://youtu.be/AAwwLHb20To

Power point to take notes on: L(digital).ppt Download L(digital).ppt

Additional Resources:

Comparison of Analog and Digital Links to an external site.

A nice tutorial on digital logic Links to an external site.from Bucknell University

Summary of Digital Gates & Digital Math Links to an external site.

ASCII printable characters table Links to an external site.

Computer number format Links to an external site.

Comparison of pixels Links to an external site.

RGB color table Links to an external site.

Application:

Comparison of Analog vs. Digital Recording Links to an external site.

There are now several apps for iphone that will let you see your voice on an oscilloscope.

Lab Application:

Overview of 7400 Series digital circuits Links to an external site.

List of 7400 series integrated circuits Links to an external site.