dekatronsThe neon-glowing dekatrons which power the world's oldest original computer, WITCH, which is currently housed at Bletchley Park's National Museum of Computing.Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on WhatsApp (Opens in new window)Click to email a link to a friend (Opens in new window)