why have computer become such a useful gadget? how did the prehistoric man make calculations?
Answers
Answer:
I must applaud the individual who compiled the list of 101 gadgets that changed the world. It’s even in alphabetical order! You might scoff at some of the ‘gadget’s as they may not fit the mold in which we think about gadgets today, but they were gadgets way back when, so keep that in mind as you trickle through. It’s a great list that includes the condom, Gameboy and bra. Is there anything missing from the list?
1. Abacus, AD190
Use of the abacus, with its beads in a rack, was first documented in Han Dynasty China in about AD190, but the word dates to much earlier calculating devices. “Abacus” derives from the Hebrew ibeq, meaning to ” wipe the dust” or from the Greek abax, meaning “board covered with dust”, which describes the first devices used by the Babylonians. The Chinese version was the speediest way to do sums for centuries and, in the right hands, can still outpace electronic calculators.
2. Archimedes Screw, c.700BC
Purportedly devised by the ancient Greek physicist Archimedes of Syracuse in the 3rd century BC to expel bilge water from creaking ships, the screw that bears his name in fact predates Archimedes by about 400 years. Recent digs have established that earlier screws, which are capable of shifting water ” uphill”, were used in the Hanging Gardens of Babylon in the 7th century BC. So effective was the device, it is still used today in several sewage plants and irrigation ditches.
3. Aspirin, 1899
Answer:
Why have computer become such a useful gadget ?
Gadgets are electronically simplified applications that make work easy. They play a significant role in the common man's life and we have grown so used to it that it becomes very difficult for us to think of daily life chores in the absence of machines.
Explanation:
how did the prehistoric man make calculation ?
An abacus is a device composed of beads that slide along rods, which fit into a frame. In ancient times, the abacus was used as a calculator; it aided in performing mathematical processes like counting, addition, subtraction, and multiplication.
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