The abacus is the original mechanical counting device. It was likely first used over five thousand years ago, and used beads to keep track of numbers.
The Abacus
The abacus. over 4000
Mechanical ventilation is the use of a mechanical device (machine) to inflate and deflate the lungs.
the cotton grin is a mechanical device that removes the seeds from cotton
The abacus, also called a counting frame, is a calculating tool used primarily in parts of Asia for performing arithmetic processes
yes indeed young sir!
The abacus. over 4000
The first mechanical counting device was invented by Blaise Pascal in 1642. It was primarily used as an adding machine. It could add and subtract two numbers.
napiers bone
The first mechanical counting device was invented by Blaise Pascal in 1642. It was primarily used as an adding machine. It could add and subtract two numbers.
An abacus.
An abacus.
he is remembered because he made the computerhe designed a mechanical one but never made it
Mechanical input device
how do you when you have crossed a threshold for a mechanical device
A mechanical or electronic device that displays the time.
Light pen is a mechanical or optical device? i don't know answer for this
motor