ALGOL-60 had its own keyboard (sort of): https://retrocomputing.stackexchange.com/questions/16082/was-there-an-input-device-capable-of-entering-all-algol-60-symbols-with-correct
ALGOL-60 had its own keyboard (sort of): https://retrocomputing.stackexchange.com/questions/16082/was-there-an-input-device-capable-of-entering-all-algol-60-symbols-with-correct