evolution of computer: history of computer

evolution of computer: history of computer: COMPUTER :-                        computer is derived from the word 'computer' which means to calculate; but a computer is not li...

history of computer

COMPUTER:-
                       computer is derived from the word 'computer' which means to calculate; but a computer is not limited to a calculating device. computer are versatile and can handle different applications at the same time.
Do you know how computer came into existence? the present day computer is entirely different from the earlier devices that were invited for doing calculations. let us glance through the major milestones in the journey leading to present day computer.

HISTORY OF COMPUTER

The need to keep a track of numbers led to the invention of different counting devices. Right from Abacus the first counting device; many devices were invented, leading to the development computers.

3000-BC ABACUS

• Abacus was the first mechanical device for calculations developed in china.
• It is made up of a wooden frame with rods, each having beads.
• The frame is divided into two parts - Heaven and Earth.
• Each rod in Heaven has 2 beads and the earth has 5 beads.
• It is used for additions, subtraction, multiplication and division.
• A skilled user can solve problems nearly as fast as somebody with a calculator.

PASCAL ADDING MACHINE 

• Blaise pascal, a french mathematician invented the first mechanical calculator at the age of 19 the year 1642.
• It used gears, wheels and dials.
• Numbers were displayed by rotating the wheels.
• It was capable of performing addition an subtraction.
• The gear principle was further employed in many mechanical calculators. Taxi meter is a perfect example of it.

LEIBNIZ CALCULATOR

• Leibniz, the famous German mathematician improved on pascal's machine in 1671. Leibniz calculator was a mechanical device.
• Apart from performing addition and subtraction, the Leibniz calculator could even do multiplication, division and find square roots.

CHARLES BABBAGE 

• Charles Babbage, a British mathematician, is considered as the father of computers.
• He invented a working model of mechanical computer, called the difference engine in 1822 and the Analytical engine in 1833.
• The analytical engine had five units- input, output, store, mill and control.
• These units worked like the modern computer. All the computers which are used nowadays, are based on it.
• Store was used for storing the data and mill was the calculating unit.
• control unit was used for supervising all the units.

AUGUSTA ADA LOVELACE

Lady Augusta Ada Lovelace, was an English mathematician and writer chiefly known for her work on Charles Babbage's analytical engine. She is considered as the "First Programmer" who suggested Binary Data storage (0 and 1) instead of decimal number system.

HOWARD AIKEN 

Howard Aiken was the primary engineer in IBM, who developed the first automatic sequence - controlled calculator, the Mark l in 1944.

ENIAC

computer

ENIAC  (Electronic Numeric Integrator And Calculator)

The first general purpose electronic digital computer was invented by John Mauchly and J. Presper Eckert. It consisted of 18,000 vaccum tubes and was 1000 times faster then the mark 1.

UNIVAC 1

UNIVAC 1 (Universal Automatic Computer 1)

The first commercial electronic computer was also developed by J. Presper Eckert and John Mauchly in 1951. It was also the first computer to handle both numerical text data.

basic computer

Computer:- 
                    In the present area, computer influence the field of education as well as entertainment. earlier, computers