PDP-1 Input-Output Systems Manual

This document serves as a preliminary manual for the input-output systems of the PDP-1. It details the methodologies for transferring information between the computer and external devices, including jam transfers, the two-step transfer method, and in-out transfer (IOT) instructions. The manual covers the operation of standard equipment such as point-plotting oscilloscopes, paper tape readers and punches, and typewriters. It also provides in-depth technical information on synchronization, the Sequence Break System for program interrupts, high-speed data channels, and includes comprehensive appendices listing I/O commands and available interconnections.