What is the name of Iron Maiden's first studio album from 1980?

Explanation

Iron Maiden is a British heavy metal band formed in 1975 in London by, et al., Steve Harris and Dave Murray. In 1982, Bruce Dickinson became lead singer. They are one of the most influential heavy metal bands in the world. Their albums include "Iron Maiden" (1980), "The Number of the Beast" (1982), "Powerslave" (1984), "Seventh Son of a Seventh Son" (1988) and "The Final Frontier" (2010). Iron Maiden has a mascot named Eddie.