NASA Office of Logic Design

NASA Office of Logic Design

A scientific study of the problems of digital engineering for space flight systems,
with a view to their practical solution.

APOLLO GUIDANCE COMPUTER (AGC) Schematics

 

The documents below, courtesy of Eldon C. Hall, are schematics for the Block II Apollo Guidance Computer.

Please see related documents on the AGC Integrated Circuits and Reliability Page.  Detailed examination of the problems associated with the packages can be found in those reports, along with die related issues.  Additionally, a partial analysis of Apollo devices has been conducted.  The AGC NOR Gate Specifications goes along with this page.  Additional documents related to and about the AGC are also available.  Additionally, the Apollo Guidance Computer and Other Computer History will be of interest to readers of this page.

 

INDEX TO DRAWINGS

(.zip file)

  SHEET 1 SHEET 2

SCHEMATIC AND FLOW DIAGRAM

INTERFACE A25-A26

DRAWING NO. 2005928

  

SCHEMATIC AND WIRING DIAGRAM

INTERFACE A27-A29

DRAWING NO. 2005912

SCHEMATIC

AGC POWER SUPPLY

INTERFACE A30-A31

DRAWING NO. 2005971

  

SCHEMATIC

CLOCK OSCILLATOR

MODULE NO. B7

DRAWING NO. 2005003

  

SCHEMATIC

POWER SUPPLY

MODULE NO. D7

DRAWING NO. 2005904

  

 

 

 

 

  SHEET 1 SHEET 2

SHEET 3

SCHEMATIC

DUAL NOR GATE

DRAWING NO. 2005011

  

LOGIC FLOW DIAGRAM

RESTART MONITOR

CHANNEL 77   ALARM BOX

DRAWING NO. 2003305

    

LOGIC FLOW DIAGRAM

MODULE NO. A1

SCALER MODULE

DRAWING NO. 2005259

  

LOGIC FLOW DIAGRAM

MODULE NO. A2

TIMER

DRAWING NO. 2005260

LOGIC FLOW DIAGRAM

MODULE NO. A3

S Q REGISTER AND DECODING

DRAWING NO. 2005251

  

LOGIC FLOW DIAGRAM

MODULE NO. A4

STAGE BRANCH DECODING MODULE

DRAWING NO. 2005262

  

LOGIC FLOW DIAGRAM

MODULE NO. A5

CROSS POINT GENERATOR NQI

DRAWING NO. 2005261

  

LOGIC FLOW DIAGRAM

MODULE NO. A6

CROSS POINT GENERATOR II

DRAWING NO. 2005263

  

LOGIC FLOW DIAGRAM

MODULE NO. A7

SERVICE GATES

DRAWING NO. 2005252

  

LOGIC FLOW DIAGRAM

MODULE NO. A8

4 BIT MODULE

DRAWING NO. 2005255

  

LOGIC FLOW DIAGRAM

MODULE NO. A9

4 BIT MODULE

DRAWING NO. 2005256

  

LOGIC FLOW DIAGRAM

MODULE NO. A10

4 BIT MODULE

DRAWING NO. 2005257

  

LOGIC FLOW DIAGRAM

MODULE NO. A11

4 BIT MODULE

DRAWING NO. 2005258

  

LOGIC FLOW DIAGRAM

MODULE NO. A12

PARITY AND S REGISTER

DRAWING NO. 2005253

  

LOGIC FLOW DIAGRAM

MODULE NO. A13

ALARMS

DRAWING NO. 2005269

    

LOGIC FLOW DIAGRAM

MODULE NO. A14

MEMORY TIMING & ADDRESSING

DRAWING NO. 2005264

  

LOGIC FLOW DIAGRAM

MODULE NO. A15

RUPT SERVICE

DRAWING NO. 2005265

  

LOGIC FLOW DIAGRAM

MODULE NO. A16

INOUT I

DRAWING NO. 2005266

  

LOGIC FLOW DIAGRAM

MODULE NO. A17

INOUT II

DRAWING NO. 2005267

  

LOGIC FLOW DIAGRAM

MODULE NO. A18

INOUT III

DRAWING NO. 2005268

  

LOGIC FLOW DIAGRAM

MODULE NO. A19

INOUT IV

DRAWING NO. 2005270

  

LOGIC FLOW DIAGRAM

MODULE NO. A20

COUNTER CELL 1

DRAWING NO. 2005254

  

LOGIC FLOW DIAGRAM

MODULE NO. A21

COUNTER CELL II

DRAWING NO. 2005250

LOGIC FLOW DIAGRAM

MODULE NO. A22

INOUT V

DRAWING NO. 2005271

  

LOGIC FLOW DIAGRAM

MODULE NO. A23

INOUT VI

DRAWING NO. 2005272

  

LOGIC FLOW DIAGRAM

MODULE NO. A24

INOUT VII

DRAWING NO. 2005273

  

Apollo Guidance Computer and Other Computer History

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Last Revised: February 03, 2010
Web Grunt: Richard Katz
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