Computer
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A computer is a machine that can be programmed to automatically carry out sequences of arithmetic or logical operations. Modern digital electronic computers can perform generic sets of operations know
A human computer, with microscope and calculator, 1952
The Ishango bone, a bone tool dating back to prehistoric Africa
Charles Babbage
A diagram of a portion of Babbage's Difference engine
The history of computing hardware spans developments from early devices used for simple calculations to today's complex computers, encompassing advances in both analog and digital technology.
View through the back of Pascal's calculator. Pascal invented his machine in 1642.
A set of John Napier's calculating tables from around 1680
Detail of an arithmometer built before 1851. The one-digit multiplier cursor (ivory top) is the leftmost cursor.