March 2000
Intermediate to advanced
632 pages
18h 6m
English
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13
RS-232
13.1 Introduction
RS-232 is one of the most widely used techniques used to interface external equipment to computers. It uses serial communications where one bit is sent along a line, at a time. This differs from parallel communications which send one or more bytes, at a time. The main advantage that serial communications has over parallel communications is that a single wire is needed to transmit and another to receive. RS-232 is a de facto standard that most computer and instrumentation companies comply with. It was standardised in 1962 by the Electronics Industries Association (EIA). Unfortunately this standard only allows short cable runs with low bit rates. The standard RS-232 only allows a bit rate of 19600 bps for a maximum distance ...
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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.
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.