Harvard researcher Howard Aiken built the world’s first program-controlled calculator on this day in 1944. It was popularly called the Harvard Mark I.

Did you know that:

• Possibly first performance of Shakespeare’s tragedy Macbeth was performed in the Great Hall at Hampton Court Palace for King James I on this day in 1606
• Theophilus Van Kannel of Philadelphia patented the revolving door on this day in 1888
• Charlize Theron is a South African and American actress and producer born on this day in 1975

// Compiled by Zoya Siddiqui