Port 21
Port Number 21
21
sextillion
Order of Magnitude 21 > sextillion
sextillionth
Order of Magnitude −21 > sextillionth
Scandium – Sc21
Atomic Number 21 | Atomic Symbol Sc | Atomic Name Scandium
UNIVAC (21)
UNIVAC Code (21)
UNIVAC (17)
UNIVAC Code (17)
FIELDATA Character (21)
Character Code (21)
FIELDATA Character (17)
Character Code (17)
ASCII Printable Character Code !
010 0001, 41, 33, 21, !, ,
ASCII Name for Negative Acknowledgement
001 0101, 25, 21, 15, ERR, ␕, Negative Acknowledgement