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AN-203

Part Number	AN-203
Manufacturer	ZBasic
Description	I/O Expansion
Published	Feb 5, 2014
Detailed Description	ZBasic AN-203 I/O Expansion Techniques Introduction Application Note On more complex projects it is often the case tha...
Datasheet	AN-203 PDF File

Overview

ZBasic AN-203 I/O Expansion Techniques Introduction Application Note On more complex projects it is often the case that more I/O lines are needed than the number that are available on the chosen processor.
In this situation, you might first try to redesign the application to require fewer I/O lines.
For example, you may be able to use a given output for multiple purposes.
If you still need additional I/O lines, there are several techniques that you might employ, separately or in combination, to solve the problem.
Although the examples given in this application note are based on the ZX-24, the principles can be equally well applied to the other ZX processors.
Using a Multiplexer for Multip...

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