Did you know that the term “bug” (error) in software comes from insect (or bug)?

The origin of the term “bug” dates back to 1947, when a physical insect (a moth) was found in a computer, a Mark II calculator at Harvard University. The insect caused a malfunction in the system. The technicians who found the insect recorded in the logbook that they had found a “bug.” Although the word “bug” had been used earlier to denote technical problems, this incident helped popularize the term within the world of computers.

So it was literally a “bug” in the machine, and since then, the term has been used to refer to errors or malfunctions in software and hardware.