© National Instruments Corporation xi Lab-PC+ User Manual
About This Manual

This manual describes the electrical and mechanical aspects of the Lab-PC+ and contains
information concerning its operation and programming.
The Lab-PC+ is a low-cost multifunction analog, digital, and timing I/O board for PC compatible
computers.

Organization of the Lab-PC+ User Manual

The Lab-PC+ User Manual is organized as follows:
• Chapter 1, Introduction, describes the Lab-PC+; lists what you need to get started; describes
the optional software and optional equipment; and explains how to unpack the Lab-PC+.
• Chapter 2, Configuration and Installation, describes the Lab-PC+ jumper configuration and
installation of the Lab-PC+ board in your computer.
• Chapter 3, Signal Connections, describes how to make input and output signal connections to
your Lab-PC+ board via the board I/O connector.
• Chapter 4, Theory of Operation, contains a functional overview of the Lab-PC+ and explains
the operation of each functional unit making up the Lab-PC+. This chapter also explains the
basic operation of the Lab-PC+ circuitry.
• Chapter 5, Calibration, discusses the calibration procedures for the Lab-PC+ analog input
and analog output circuitry.
• Appendix A, Specifications, lists the specifications of the Lab-PC+.
• Appendix B, OKI 82C53 Data Sheet, contains the manufacturer data sheet for the
OKI 82C53 System Timing Controller integrated circuit (OKI Semiconductor). This circuit
is used on the Lab-PC+.
• Appendix C, OKI 82C55A Data Sheet, contains the manufacturer data sheet for the
OKI 82C55A Programmable Peripheral Interface integrated circuit (OKI Semiconductor).
This circuit is used on the Lab-PC+.
• Appendix D, Register Map and Descriptions, describes in detail the address and function of
each of the Lab-PC+ registers.
• Appendix E, Register-Level Programming, contains important information about
programming the Lab-PC+.
• Appendix F, Customer Communication, contains forms you can use to request help from
National Instruments or to comment on our products and manuals.