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Engineering Digital Design
book

Engineering Digital Design

by Richard F. Tinder
January 2000
Intermediate to advanced content levelIntermediate to advanced
884 pages
29h 39m
English
Academic Press
Content preview from Engineering Digital Design
530 CHAPTER 11 / SYNCHRONOUS FSM DESIGN CONSIDERATIONS
FIGURE 11.34
Debouncing a rotary select switch with four posts.
low-budget needs is to replace each basic cell in Fig. 11.34 with cross-coupled invert-
ers as in Fig. 11.33a. Another alternative applies to the case of a large number of posts
where fast throughput of the input signal is important and where fan-in limitations become
a problem when using CMOS NAND gates. Here, the debouncing circuit in Fig. 11.34
can best be implemented with NOR gates, reset-dominant basic cells and with the rotary
switch ground replaced by the supply voltage, +V
S
. In this case the NOR gates can be
configured as in Fig. ...
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Publisher Resources

ISBN: 9780126912951