The Pentaconta Crossbar and Exchange (calling315.com) | HN Screenshots

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Screenshot of calling315.com: The Pentaconta Crossbar and Exchange

First screen, captured 2 years ago.

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Screenshot of calling315.com: The evolution of annunciator signaling for telephones

The evolution of annunciator signaling for telephones (calling315.com)

86 points by Kovalick 1 year ago | 13 comments

Screenshot of linusakesson.net: The TTY Demystified (2008)

The TTY Demystified (2008)(linusakesson.net)

69 points by jonasdegendt 1 year ago | 6 comments

Screenshot of linusakesson.net: The TTY Demystified (2008)

The TTY Demystified (2008)(linusakesson.net)

59 points by 20after4 5 months ago | 9 comments

Screenshot of samuele963.github.io: History of the Italian electrical system

History of the Italian electrical system (samuele963.github.io)

115 points by wannacboatmovie 2 years ago | 39 comments

Screenshot of en.wikipedia.org: Gakken Ex-System

Gakken Ex-System (en.wikipedia.org)

49 points by walterbell 2 years ago | 16 comments

Screenshot of loomcom.com: Emulating the DMD 5620 Terminal (2018)

Emulating the DMD 5620 Terminal (2018)(loomcom.com)

23 points by rbanffy 2 years ago | 5 comments