tailieunhanh - Parallel Port Complete: Programming, Interfacing, & Using the PC's Parallel Printer Port

This detailed guide for programmers, developers, and computer enthusiasts shows how to get the most from parallel port in any application or project. The Visual-Basic code and circuit designs include examples that use the new enhanced (EPP) and expanded (EPC) excellent resource for Visual Basic programmers looking to interface hardware through standard ports. Anyone designing hardware to work with a parallel port is well advised to add this book to their library. | Parallel Port Complete Programming Interfacing Source code i n Visual Basic User tips I NCLUDES DISK Jan Axelson Table of Contents Introduction ix 1 Essentials 1 Defining the Port 1 Port Types System Resources 4 Addressing Interrupts DMA Channels Finding Existing Ports Configuring 6 Port Options Drivers Adding a Port Port Hardware 9 Connectors The Circuits Inside Cables Multiple Uses for One Port 11 Security Keys Alternatives to the Parallel Port13 Serial Interfaces Parallel Port Complete Other Parallel Interfaces Custom I O Cards PC Cards 2 Accessing Ports 17 The Signals 17 Centronics Roots Naming Conventions The Data Register The Status Register The Control Register Bidirectional Ports Addressing 24 Finding Ports Direct Port I O 26 Programming in Basic Other Programming Languages Other Ways to Access Ports 31 LPT Access in Visual Basic Windows API Calls DOS and BIOS Interrupts 3 Programming Issues 39 Options for Device Drivers 39 Simple Application Routines DOS Drivers Windows Drivers Custom Controls Speed 45 Hardware Limits Software Limits 4 Programming Tools 53 Routines for Port Access 53 Data Port Access Status Port Access Control Port Access Bit Operations A Form Template 60 Saving Initialization Data Finding Selecting and Testing Ports 5 Experiments 85 Viewing and Controlling the Bits 85 Circuits for Testing Output Types Component Substitutions iv Parallel Port .

• Kỹ thuật lập trình
• Parallel Port Complete
• Programming
• Interfacing
• Using the PCs Parallel Printer Port
• Visual Basic
• circuit designs
• Port Array
• LIBRARY Declarations
• Data Conversion
• Signals and Variables
• State Machines