Digital Equipment Corporation (DEC) PDP-1 Memoranda For 1969

Source Documents

The following records are a very incomplete listing selected from the available correspondence, letters, memoranda and reports published by the Computer History Museum. Refer to their Collections and contents for the complete records. The references below may only contain the title or a brief summary of a Memorandum's contents. A subset will contain an extract of a memorandum, and rarely, some will have nearly most of a record. Do not rely on any of the information below, always refer to the source material published by the Computer History Museum. The listings below are only a fraction of the material published by the Computer History Museum. Any copyright of the Computer History Museum remains with the Computer Museum.

DEC records are not organised as a single stream organised into a simple timeline but consists of multiple batches of records in multiple, ovelapping, forward or reversed timelines. There can be multiple copies of a record in different batches. A single batch can appear in different subsets of the DEC Collection. The following was selected to trace the history and produce a timeline for the PDP-1. Other records are included purely out of curiosity, or a whim. You have been warned.

1971

A reprint from Computers and Automation, November, 1971

Monthly Computer Census, Page 45

The following is a summary made by COMPUTERS AND AUTOMATION of reports and estimates of the number of general purpose electronic digital computers manufactured and installed, or to be manufactured and on order. These figures are mailed to individual computer manufacturers from time to time for their information and review, and for any updating or comments they may care to provide. Please note the variation in dates and reliability of the information. Several important manufacturers refuse to give out, confirm, or comment on any figures.

Summary as of October 15, 1971

		Date of	Average or Range	Number of Installations			Number of
Name of Manufacturer	Name of Computer	First Installation	Monthly Rental $ (000)	In U.S.	Outside U.S.	In World	Unfilled Orders
Digital Equipment Corporation	PDP-1	11/60	3.4	50	2	52	X