1.8 Abacus
Abacus was a simple calculating device. It was a wooden rack holding horizontal wires with a numbers of beds fed on them. The beds across the wires were free to move along the length of the wires. These beds were moved around, according to specified rules to perform the simple arithmetic operations.
1.9 Analytical Engine
It was an automatic mechanical digital computer for general purpose use. It was the first automatic programmable computer. The analytical Engine included several features that are also present in the modem electronic computer.
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Tue Feb 24, 2015 6:00 am by Shaheer
