1. a person who operates a keyboard or types information into a computer or machine
2. a device or mechanism that produces a keying signal, especially in telecommunications or radio transmission
Usage: technical
3. in Morse code transmission, a device used to send signals by opening and closing an electrical circuit
Usage: technical; radio

Examples

• The data entry keyer worked quickly to input all the customer information.
• She trained as a keyer before becoming a full-time secretary.
• The radio operator adjusted the keyer to ensure clear signal transmission.
• A good keyer must have accurate typing skills and attention to detail.
• The telegraph keyer clicked rhythmically as the operator sent the message in Morse code.
• Modern keyers in broadcasting studios are often computerized devices.