April 2014
Intermediate to advanced
536 pages
12h 41m
English
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18
INTERFACING: KEYBOARDS
CHAPTER OBJECTIVES
In this chapter, the reader is introduced to keyboard interfacing, the most widely used input device for any embedded system. After completion of the chapter, the reader should be able to understand
- How does the mechanical contact-type keys function.
- What is the bouncing of keys and how to debounce those.
- How to interface individual keys as well as key-matrix with MCS-51.
- How to develop software routine to read keys and scan a keyboard.
18.1 | Introduction
Keyboard and display are two most widely used user interfaces for any embedded system. In this chapter, we discuss about some important aspects of keyboard interfacing. As a matter of fact, keys may be considered as simplest type of sensors. They ...
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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.