Simon Ekstrand, Text mode 40 x 24 monochrome Teletext, 78 x 75 block graphics made on the ABC80 computer in the 80s.
An introduction to ABC80, the Swedish answer to the TRS-80. It was built by the government-owned Luxor, and had a textmode that supported monochrome teletext, like you can see in the video. As a bonus, here is a video of a guy browsing the web with the ABC80.