Windows logo - 2021 —
Photo Credit: Microsoft Corp - Public Domain, https://commons.wikimedia.org/w/index.php?curid=106955582

Kurt Friedrich Gödel —
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=120309395

Physical model of a Turing machine — . A true Turing machine would have unlimited tape on both sides, however, physical models can only have a finite amount of tape.
Photo Credit: By Rocky Acosta - Own work, CC BY 3.0, https://commons.wikimedia.org/w/index.php?curid=24369879

On Computable Numbers —
Photo Credit:

David Hilbert, 1907 — American Journal of Mathematics
Photo Credit: By Unknown author - [Photograph]: David Hilbert. (1907). American Journal of Mathematics, 29(1). Retrieved from https://www.jstor.org/stable/2369910, Public Domain, https://commons.wikimedia.org/w/index.php?curid=56279447

Command Prompt —
Photo Credit: (c) 2022 aslasnome.com

Original IBM Personal Computer motherboard —
Photo Credit: By German - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=18645781

IBM Personal Computer — On display at the Musée Bolo, EPFL, Lausanne
Photo Credit: By Rama & Musée Bolo - File:IBM_PC-IMG_7271.jpg, CC BY-SA 2.0 fr, https://commons.wikimedia.org/w/index.php?curid=94784371

Tim Paterson —
Photo Credit: https://www.bizjournals.com/seattle/print-edition/2015/05/01/microsoft-bought-tim-paterson-s-dos-for-75k-the.html

.25-inch floppy disks holding a very early version of Linux —
Photo Credit: By Shermozle at English Wikipedia, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=11478957

penguin Tux, the Linux Mascot —
Photo Credit: By Larry Ewing, Simon Budig, Garrett LeSage - https://isc.tamu.edu/~lewing/linux/, http://www.home.unix-ag.org/simon/penguin/, garrett/Tux on GitHub, CC0, https://commons.wikimedia.org/w/index.php?curid=753970