Berkeley attended
St. Bernard's School and
Phillips Exeter Academy. He received a BA in Mathematics and Logic from
Harvard in 1930. He pursued a career as an insurance
actuary at
Prudential Insurance from 1934–1948, except for service in the
United States Navy during
World War II. Berkeley saw
George Stibitz's calculator at
Bell Laboratories in 1939, and the
Harvard Mark I in 1942. In November 1946 he drafted a specification for "Sequence Controlled Calculators for the Prudential", which led to signing a contract with the
Eckert-Mauchly Computer Corporation in 1947 for one of the first
UNIVAC computers. He became famous in 1949 with the publication of his book
Giant Brains, or Machines That Think in which he described the principles behind computing machines (called then "mechanical brains", "sequence-controlled calculators", or various other terms), and then gave a technical but accessible survey of the most prominent examples of the time, including machines from MIT, Harvard, the Moore School, Bell Laboratories, and elsewhere. In
Giant Brains, Berkeley also outlined a device which some have described as the first "
personal computer",
Simon. Plans on how to build this computer were published in the journal
Radio Electronics in 1950 and 1951. Simon used relay logic and cost about $600 to construct. The first working model was built at Columbia University with the help of two graduate students. He also created the
Geniac and Brainiac toy computers. Berkeley founded, published and edited
Computers and Automation, the first computer magazine. He sometimes wrote for the magazine under the pseudonym "Neil D. MacDonald". He was involved in a "hazards research" at Prudential Insurance, with the goal of determining the greatest hazards facing the modern world. Berkeley came to the conclusion that nuclear war was the biggest existential threat to humanity. After the company dropped the project, Berkeley was forbidden to work on anti-nuclear efforts, even on his own time, prompting him to quit Prudential in 1948 and found his own actuary and computing consultancy. After
World War II, Berkeley became a lifelong peace activist and campaigned against nuclear proliferation. In 1958 Berkeley joined the
Committee for a SANE Nuclear Policy (SANE), and was active in the organization's Boston chapter. == Computer art ==