DEC engineering drawing numbers

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DEC drawing codes, embedded in the drawing numbers of DEC engineering drawings, allow one to discern what kind of information is conveyed in that particular drawing. A DEC drawing number will be of the form AA-bbbb-x-yy, where 'AA' is the drawing code, 'bbbb' is the device which the drawing is of, 'x' (a digit) is the 'manufacturing series', and 'yy' is the page number within the set.

The list of drawing codes, as of circa 1964, was:

Code Meaning
AD Assembly Drawing
AR Arrangement Drawing
BD Functional Block Diagram
CD Cable Diagram
CP Component List
CS Circuit Schematic
FD Flow Diagram
IC Interface Cabling Diagram
LO Layout Drawing
MU Module Utilization Drawing
PL Parts List
RS Replacement Schematic
SD Specification Drawing
TD Timing Diagram
UA Unit Assembly
WD Wiring Diagram
WL Wiring List

See also