Which of these statements about the concept keyboard is FALSE?

a$.$

The most commonly used text code for a keyboard is the International Reference Alphabet

b$.$

$128$ different characters can be represented into two types: printable and status

c$.$

Alphabetic, numeric, and special characters that can be printed on paper or displayed on a screen

d$.$

Each character for a keyboard is a code, typically $7$ or $8$ bits in length.