Engineering Drawings

This document, Chapter 10 of a technical manual, outlines the standards and conventions used in DEC engineering drawings. It details:

• Drawing Numbers: The five-group hyphenated structure for identifying drawing types (BS, CD, CL, etc.).
• Symbols: Explanations of circuit, logic, and signal symbols (including pulses, inverters, flip-flops, and delays).
• Logic & Pulse Standards: Definitions for logic levels (ground vs -3v), pulse types, amplitudes, widths, and triggering transitions.
• Component Substitution: A table providing EIA-equivalent replacements for various DEC semiconductors.
• S-Series Modules: A list of R-series modules adapted for PDP-8 systems.