>You can still watch TV on a 1956 vintage B&W set.
You can't watch UHF, video cassettes, cable or satellite TV at all on
a 1956 TV set (assuming you could find one that still worked), and in
most cases you would get less than satisfactory performance from VHF
broadcast TV as well.
The theoretical basis of the broadcast TV system hasn't changed a
great deal, but the actual technical practice has changed very
significantly.
Cheers,
Bill
Bill Bolton
Sydney, Australia