Since the fourth edition of Digital Design, the commercial availability of devices using digital technology to receive, manipulate, and transmit information seems to have exploded. Cell phones and handheld devices of various kinds offer new, competing features almost daily. Underneath the attractive graphical user interface of all of these devices sits a digital system that processes data in a binary format. The theoretical foundations of these systems have not changed much; indeed, one could argue that the stability of the core theory, coupled with modern design tools, has promoted the widespread response of manufacturers to the opportunities of the marketplace. Consequently, our refinement of our text has been guided by the need to equip our graduates with a solid understanding of digital machines and to introduce them to the methodology of modern design.
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