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Charles Babbage theorized the automatic computer in 1837 and completed his invention in 1856. The computer was powered by steam and was capable of doing mathematical computations.
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Douglas Engelbart invented the ball mouse, the predecessor of the modern mouse that we use today.
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Martin Cooper invented the first cellular phone, enabling people to communicate without the use of a landline.
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Adam Osborne created the first laptop in 1981, allowing people to access work and internet without the need for a computer tower, or "box".
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IBM released the first touch screen cell phone in 1994, called the Simon Personal Communicator.