Roberta Lincoln at typewriter
The typewriter could interpret perfect speech and pauses
A typewriter is a writing machine that produces characters similar to typeset print by means of a manually-operated keyboard that actuates a set of raised types, which strike paper through an inked ribbon.
During the 1950s, most science fiction writers had to utilize typewriters. (DS9: "Far Beyond the Stars")
In 1968, Roberta Lincoln was surprised by the typewriter in Gary Seven's office, which instead of needing manual input like all typewriters of the day, was able to type what was spoken and was even able to interpret the context of the conversation. (TOS: "Assignment: Earth")