October 2000
Intermediate to advanced
1152 pages
26h 41m
English
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Character Devices
Character devices offer a flow of data that must be read in order. Whereas block devices enable a seek to select the next block of data transferred, for example, from one edge or the other of a diskette, character devices represent hardware that doesn't have this capability. An example is a terminal, for which the next character to be read is whatever key you type at the keyboard.
In fact, because there are only two basic types of devices, block and character, all hardware is represented as one or the other, rather like the animal and vegetable kingdoms of biological classification. Inevitably, this means that a few devices don't quite fit into this classification scheme. Examples include tape drives, generic SCSI devices, and ...
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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.