Skip to Content
Digital Logic Design, 4th Edition
book

Digital Logic Design, 4th Edition

by Brian Holdsworth, Clive Woods
November 2002
Intermediate to advanced
519 pages
16h 45m
English
Newnes
Content preview from Digital Logic Design, 4th Edition
9

Event driven circuits

9.1 Introduction

Some sequential circuits are driven by events rather than by a train of clock pulses. For example, a digital alarm will be activated by the event that raised the alarm. In this example it is the event that drives the logic, and since the events are frequently irregular occurrences, such a circuit is referred to as an asynchronous sequential circuit or, perhaps more meaningfully, as an event driven circuit.

Asynchronous circuits are also called fundamental mode circuits. The main characteristic of this type of circuit is that only one input is allowed to change at any given instant. Simultaneous changes are forbidden as, indeed, are changes that may take place before the circuit reaches a stable condition ...

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.

Read now

Unlock full access

More than 5,000 organizations count on O’Reilly

AirBnbBlueOriginElectronic ArtsHomeDepotNasdaqRakutenTata Consultancy Services

QuotationMarkO’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.
Julian F.
Head of Cybersecurity
QuotationMarkI wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.
Addison B.
Field Engineer
QuotationMarkI’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.
Amir M.
Data Platform Tech Lead
QuotationMarkI'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Mark W.
Embedded Software Engineer

You might also like

Verilog® HDL: A Guide to Digital Design and Synthesis, Second Edition

Verilog® HDL: A Guide to Digital Design and Synthesis, Second Edition

Samir Palnitkar

Publisher Resources

ISBN: 9780750645829