Encoding Software For Perpetuity: A Compact Representation Of Apollo 11 Guidance Code

TL;DR

This paper introduces a novel method to encode Apollo 11 guidance code into a compact QR code, enabling easy digital preservation and access on mobile devices without specialized hardware.

Contribution

The work presents a new approach for compressing and encoding historic software into a scannable QR code, balancing size, readability, and preservation of historical significance.

Findings

Successfully compressed Apollo 11 guidance code into a 3 KB QR code

Demonstrated feasibility of instant access to historic software via mobile devices

Evaluated multiple compression strategies for optimal balance

Abstract

This brief note presents a novel method for encoding historic Apollo 11 Lunar Module guidance computer code into a single, compact Quick Response Code (QR code) format, creating an accessible digital artifact for transmission and archival purposes. By applying tokenization, selective content preservation, and minimal HTML/JavaScript techniques, we successfully compressed key components of the original Assembly Language Code (AGC) into a shareable, preservable, and scannable 3 kilobyte (KB) image. We evaluate multiple compression strategies and their tradeoffs in terms of size, readability, and historical significance. This method addresses the challenge of making historically significant software artifacts available through modern mobile devices without requiring specialized hardware or internet connectivity. While numerous digital preservation methods exist for historic software, this approach balances accessibility with historical significance, offering a complementary method to traditional archival techniques. This work contributes to the broader field of computing heritage preservation by demonstrating how landmark software can be made accessible instantly through contemporary mobile technologies.