Sculpture Made Out Of Typewriter Parts

line feed (LF), aka "newline" – standing for moving the cursor to the next on-screen line text in a word processor document.
Shift – a modifier key used to type capital letters and other alternate "upper" characters, would previously shift a typewriter's print carriage to allow a different stamp (such as 'D' instead 'd') to press into the ribbon and print on a page.
tty, short for teletypewriter, is used in Unix-like operating systems to designate a given "terminal".