ECE 27000 Lecture Notes - Lecture 11: Display Device, Undefined Behavior

• School: Purdue University
• Department: Electrical & Computer Engr
• Course: ECE 27000
• Professor: Meyer

Document Summary

We will design a clocked synchronous state machine and look at the minimum risk and cost. A good example of a sequencer is a digital lock. We will start with some simple character displays and look at moore and mealy model realizations A sequence generator produces a series of output signal assertions that constitute a pattern example of such include vehicle tail lights, traffic control signals, character displays, and control sequences. Two strategies i(cid:374)(cid:272)lude : (cid:373)i(cid:374)i(cid:373)u(cid:373) (cid:272)ost : u(cid:374)used states a(cid:396)e assu(cid:373)ed to (cid:271)e do(cid:374)(cid:859)t (cid:272)a(cid:396)es, pote(cid:374)tiall(cid:455) reducing realization cost while increasing risk. Minimum risk : unused states are assigned a next state, eliminating risk of undefined behavior but increasing cost. Ex : traffic light t bird signal, digital lock, scrolling display {all lab practical questions!} Character sequence display that displays a sequence like abc or cbs on a led: Q1 q0 a b c d e f g.