Bob Hamilton obituary

My father, Bob Hamilton, who has died aged 94, was a computer software designer in the industry's early years, working in the US on the Saturn 4B rocket programme which led to Saturn 5, the launch rocket for the 1969 moon landing.

Bob was born in London. His mother, Edith, died when he was seven; he and his older sister, Margot, were brought up by his father, James, who worked for a legal firm, and, at times, by various aunts and uncles.