33 Keyboard

This document serves as a guide to the 33 keyboard, covering both parity and nonparity models. It outlines the electromechanical components used to transmit ASCII code, including the codebar mechanism, keyboard contact mechanism, and keyboard-to-typing unit interface. The manual also includes specific details on optional keyboards for 3300 Series Coded Sets and Computer I/O sets, along with information on the numeric keyboard. Technical data and internal operating principles are provided, with diagrams illustrating mechanical and electrical functions.