An alternative input device is a perforated tape reader and, more recently, computer storage media (such as floppy disks). Source: Internet
Since perforated tape at the time could record eight bits in one position, it also allowed for a parity bit for error checking if desired. Source: Internet
The message (in Morse code ) was typed onto a piece of perforated tape using a keyboard-like device called the 'Stick Punch'. Source: Internet