Apollo Guidance Computer | Wikipedia audio article
Channel: wikipedia tts
Date: 13/01/2019

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Apollo_Guidance_Computer


00:01:39 1 Operation
00:03:14 2 Design
00:05:51 2.1 DSKY interface
00:08:19 2.2 Timing
00:09:56 2.3 Central registers
00:10:46 2.4 Other registers
00:11:03 2.5 Instruction set
00:21:41 2.6 Memory
00:25:34 2.7 Interrupts and involuntary counters
00:27:50 2.8 Standby mode
00:29:32 2.9 Data buses
00:31:34 2.10 Software
00:37:26 3 Block II
00:40:43 4 PGNCS trouble
00:44:54 5 Applications outside Apollo
00:45:56 6 See also



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SUMMARY
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The Apollo Guidance Computer (AGC) was a digital computer produced for the Apollo program that was installed on board each Apollo command module (CM) and lunar module (LM). The AGC provided computation and electronic interfaces for guidance, navigation, and control of the spacecraft. The AGC has a 16-bit word length, with 15 data bits and one parity bit. Most of the software on the AGC is stored in a special read-only memory known as core rope memory, fashioned by weaving wires through magnetic cores, though a small amount of read-write core memory is available.
Astronauts communicated with the AGC using a numeric display and keyboard called the DSKY (for display&keyboard, pronounced 'DISS-key'). The AGC and its DSKY user interface were developed in the early 1960s for the Apollo program by the MIT Instrumentation Laboratory and first flew in 1966. The AGC was one of the first integrated circuit-based computers. The computer's performance was comparable to the first generation of home computers from the late 1970s, such as the Apple II, TRS-80, and Commodore PET.