June 2012
Intermediate to advanced
528 pages
15h 40m
English
Content preview from Computers as Components, 3rd EditionBecome 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,
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1.2 Complex Systems and Microprocessors
We tend to think of our laptop as a computer, but it is really one of many types of computer systems. A computer is a stored program machine that fetches and executes instructions from a memory. We can attach different types of devices to the computer, load it with different types of software, and build many different types of systems.
So what is an embedded computer system? Loosely defined, it is any device that includes a programmable computer but is not itself intended to be a general-purpose computer. Thus, a PC is not itself an embedded computing system. But a fax machine or a clock built from a microprocessor is an embedded computing system.
This means that embedded computing system design is a useful ...
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