Yesterday the mouse was 40 years old.

On 9 December 1968 Douglas Engelbart first used one at the Stanford Research Institute in California to demonstrate new methods of interacting with computers.

Of course, the product has come a long way since its inception; originally it was designed with wheels mounted on the underside of a wooden block. Today the design is still being honed, with ergonomics, the environment and economics among the factors now crucial in design and production.

To see Posturite's range of ergonomic mice, click here.

BBC have written a fantastic article to mark the birthday of one of the most used products in the modern world. Their feature includes the history of the mouse and a video of the first ever mouse demo. See the full article here.