June 2014
Beginner to intermediate
208 pages
7h 14m
English
Content preview from Computer Interfacing
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Computer interfacing
Software polling
Supposing that a computer is connected to several pe-
ripherals, the computer has to know, in some way, when
any one of these devices needs service. Polling is a con-
tinuous process in which the computer keeps asking each
peripheral in turn whether it needs attention. Because
the speed at which the computer works is so much
greater than that of the majority of peripherals, the an-
swer is invariably no. In this case, the computer moves
on to the next peripheral and repeats the questions, and
so on. After interrogating the last peripheral in line the
computer goes back to the first one and starts the proc
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O’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.
I 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.
I’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.
I'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.