The Toshiba Science Museum in Tokyo doesn't just house a bunch of fun activities to bring out your inner science nerd, it also features some of the oldest computers in the world — like the Todai Automatic Computer (TAC).
Developed by the University of Tokyko and Toshiba co-founder Hideo Yamashita from 1951-1958, the cathode-ray tube storage device which features 7,000 vacuum tubes and 3,000 diodes. Scroll down for a closer look of how the TAC looks today.