HOW COMPUTER LEASING CAN SAVE YOU TIME, STRESS, AND MONEY.

By 1938, the United States Navy had formulated an electromechanical analog computer small enough to make use of aboard a submarine.Several mechanical aids to calculation and measurement were being manufactured for astronomical and navigation use. The planisphere was a star chart invented by Abū Rayhān al-Bīrūnī in the early 11th century.[eight