June 2014
Beginner to intermediate
208 pages
7h 14m
English
Content preview from Computer Interfacing
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Computer interfacing
From this
8-bit
code a corresponding
3-bit
code is gener-
ated, using an
8-to-3
line encoder, which can then be
compared with the contents of a
3-bit
priority register,
the contents of which have been specified by the pro-
grammer. It is possible to use this result to prevent lower
priority interrupts from having any effect. This together
with the mask register is very powerful in establishing
priorities. The
3-bit
code here described is known as a
level vector and, as a
3-bit
code can take up eight differ-
ent values, in some designs of PIC it is used to access
one-of-eight 16-bit registers, each of which has previously
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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.
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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.