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Howard H. Aiken

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Howard Aiken was a famous American physicist. He was a pioneer in computing. A pioneer is someone who is among the first to do a new thing. He helped start the age of computers.

Harvard Mark I Computer - Left Segment
Harvard Mark I Computer - Left Segment

His work changed how we use machines to think. He wanted to solve hard problems with technology.

While studying at Harvard, Aiken faced a hard job. He had to solve math problems called differential equations. He could only solve them by using numbers. This work was very slow and tedious. He was inspired by an old idea from Charles Babbage. Babbage had thought of a machine called a difference engine. Aiken wanted to build an electro-mechanical device to do the math for him.

Harvard Mark I Computer - Left Segment
Harvard Mark I Computer - Left Segment

Aiken's big idea became the Harvard Mark I. It was also called the ASCC. This stands for Automatic Sequence Controlled Calculator. IBM helped with the engineering and the money. They also helped with the building. The machine was finished and put at Harvard in February 1944.

Harvard Mark I Computer - Left Segment
Harvard Mark I Computer - Left Segment

It was the first programmable computer in the United States.

Aiken did not stop after the first machine. He finished the Harvard Mark II in 1947. He also worked on the Mark III and Mark IV. The Mark III used some electronic parts. The Mark IV was all-electronic. These newer machines used magnetic drum memory. The Mark IV also used magnetic-core memory.

Harvard Mark I Computer - Left Segment
Harvard Mark I Computer - Left Segment

These tools were very important for science.

Aiken was a great teacher too. In 1947, he started a master's program for computer science at Harvard. This was ten years before other schools started similar programs. He also served as a Commander in the United States Navy Reserve. He received many awards, like the Edison Medal in 1970. Aiken died in 1973 while on a trip to St. Louis, Missouri.

Harvard Mark I Computer - Left Segment
Harvard Mark I Computer - Left Segment

His life helped build the digital world we know today.

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