The term "key puncher" refers to someone who operates a data entry machine that punches holes in cards to represent data or commands. There are several synonyms for this job title. One common term is "data entry clerk", which refers to someone who types data into a computer system. Another synonym is "data entry specialist", which emphasizes the specialized knowledge and skill required for accurate and efficient data entry. A third option is "punch card operator", which specifically connects the job to the technology of punch card machines. Regardless of the title used, a key puncher plays a crucial role in inputting and managing important data for a business or organization.