Stan: Well, I bet someone invented dishwashers beck in the 19th century, although probably they weren't powered by electricity back then. Was it around 1890?
Tina: Not bad! It was 1886. That's when Josephine Cochramce invented a machine that is similar to our modern –day dishwasher. And you were right – it was operated by hand.
Stan: My turn! When were digital cameras invented?
Tina: OK, I know they were invented in the United States. But when? Hmm I'd say around 1985.
Stan: In fact, it was ten years earlier, in 1975. Although the first digital camera weren’t sold until the 1990s. Did you know that the very first camera weighed pounds and was the size of a toaster?
Tina: Wow. That's heavy! Just imagine carrying that around.