Ticker tape

Ticker tape was the earliest digital electronic communications medium, transmitting stock price information over telegraph lines, in use between around 1870 through 1970. It consisted of a paper strip which ran through a machine called a stock ticker, which printed abbreviated company names as alphabetic symbols followed by numeric stock transaction price and volume information. The term "ticker" came from the sound made by the machine as it printed.

Agatha Prentiss Caraway owned a ticker tape, and she would use it to monitor and study the stock market.

Appearance
Super Friends
 * Season 1: Dr. Pelagian's War