Which component of TTY receives characters printed in all capital letters and transmits characters printed in lowercase letters?

The printer is the component of TTY (Text Telephone) systems that receives characters printed in all capital letters and is utilized for transmitting characters that are printed in lowercase letters. This distinction is significant because TTY technology is built specifically to accommodate the needs of users who are deaf or hard of hearing, allowing for clear communication through text.

In a TTY system, the printer is responsible for outputting the received text in a format that the user can read. Since traditional TTY systems do not support mixed case text, the printer commonly reflects all incoming text in capital letters to ensure consistency and readability for users who rely on this form of communication. The operation of the printer in this manner is vital for effective communication; it ensures that messages are displayed clearly without confusion that might arise from varying letter cases.

Understanding the roles of other components in a TTY system highlights why the printer is the correct choice. For example, the display is typically used in modern devices and might provide a visual representation of text but does not operate in the same fashion regarding letter case transformation. The transmitter handles the sending of data over the communication channel, while the keyboard is used for inputting text by the user, but neither the display, transmitter, nor keyboard specifically addresses the handling of