The link is probably as follows: Bank notes -> Hollerith card (80 x 12) -> Datapoint 2200 terminal (80 x 12, facilitated by 1K Intel linear shift register for d

The link is probably as follows: Bank notes -> Hollerith card (80 x 12) -> Datapoint 2200 terminal (80 x 12, facilitated by 1K Intel linear shift register for display memory) -> 2K display buffer & 4:3 display dimensions of silent film (as opposed to the later academy format) as generally used for television as the major source of demand for readymade raster cathode ray tubes => two punch cards + 1 extra status line. The Datapoint 2200, evolving from an original idea about some data editing device to replace the IBM 029 keypunch, is missing in this account, though. Announced in 1970 (and shipping in 1971), it predates any of the terminals mentioned in the article. (BTW, the Datapoint 2200, which was also the ancestor of the Intel 8008 MPU and by this the ancestor of the modern PC, was an enormously influential device and is generally underrated for historical aspects.) The link between columns on a punch card and typewriters is probably found in the need for some correspondence between typed tables and information punched on cards. The aspect ratio of silent film is probably more for esthetic reasons, since the technical aspect of the width of a frame could have been addressed by any kind of gearing. However, there's a link between the speed of the film moving through the camera, the number of exposures per second, the width of the image, the optical quality of the lens, the shutter construction and the sensitivity of the film, putting some constrains on the aspect ratio of choice. (Obviously, if the film is moving too fast and exposure becomes too short for the chosen material, the resulting image will be dim. The choice of film sensisitivity, on the other hand, is related to image contrast.)