Chapter 1. Introduction - IBM 1 Series Manual

Chapter 1. Introduction
A variety of interfaces are provided for attachment of the user's own
input/output (I/O) devices and instruments to an IBM Series/1 processor.
Serial and parallel data paths, and a multifunction timer are provided. The
user may choose one of the I/O adapter features or design an I/O adapter
to communicate directly with the processor I/O channel.
Figure 1-1 shows the various methods of attachment and the available
attachment features. Each attachmentis described in subsequent sections
of this chapter.
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Figure 1-1. Relationship of user attachments to the processor I/O channel
Introduction 1-1