Complex sentence: In 1963, IBM employees and computers helped NASA track the orbital flight of the Mercury astronauts, and a year later, the company moved its corporate headquarters from New York City to Armonk, New York.
Split into simpler sentences: In 1963, IBM employees and computers helped NASA track the orbital flight of the Mercury astronauts. A year later it moved its corporate headquarters from New York City to Armonk, New York.