Music Term: (It.) - Slow and solemn.?

Questions

Pedals were added to the bicycle in?

The early personal computer, the Sinclair ZX80, had _________ of internal memory?

Allied bombers were issued with Biro pens as pens leaked at high altitude?

The Dotmatrix printer was developed for the 1964 Tokyo Olympic Games by the Japanese company?

The worlds longest escalator is in Leningrad Metro, ______ metres long?