Men from early ages,and throughout the years,have invented and continue to invent machines to help them count.
In the beginning of time,cavemen counted with their fingers and toes.
ABACUS:
About 3000 years age,the Chinese invented the ABACUS.It was the first machine used for counting and calculating.It was made of a wooden frame,metal rods and wooden beads.Each bead has a specific value reading from right to left.
The beads in the first column are worth 1,in the second column the beads are worth 10,in the thirds column the beads are worth 100,etc.addition,subtraction,multiplication and division are performed by moving the beads..
MECHANICAL CALCULATOR:
In 1642,at the age of 19 French mathematician,Blaise Pascal invented a mechanical calculator.Pascal Father's was a tax accountant and he invented a calculator to help his father's job.
This calculator known as "PASCALINE".
The machine consisted as a wooden box that could only add and subtract by means of a series of gears and wheels.
In 1673 a German mathematician G.W.Leibniz constructed a calculator called "LEIBNIZ CALCULATOR".It could do more than just add and subtract.The Leibniz calculator could also multiply,divide and find square roots of numbers.
DIFFERENCE ENGINE:
In 1823,Charles Babbage design a computing machine based on predefined formula called the difference engine.It consist on ALU.Memory and Control Unit.Unfortunately neither of these machines were completed due to technology at that time was not advanced enough and lack of financial funding.But for his pioneering work on computer he is called the "Father Of Computer".
CARD PUNCHING MACHINE:
In 1890,Herman Holerith develop a machine called card punching and reading machine.It is also called tabulating machine.The tabulating machine used punched cards to read and sort data or information.
In the beginning of time,cavemen counted with their fingers and toes.
ABACUS:
About 3000 years age,the Chinese invented the ABACUS.It was the first machine used for counting and calculating.It was made of a wooden frame,metal rods and wooden beads.Each bead has a specific value reading from right to left.
The beads in the first column are worth 1,in the second column the beads are worth 10,in the thirds column the beads are worth 100,etc.addition,subtraction,multiplication and division are performed by moving the beads..
MECHANICAL CALCULATOR:
In 1642,at the age of 19 French mathematician,Blaise Pascal invented a mechanical calculator.Pascal Father's was a tax accountant and he invented a calculator to help his father's job.
This calculator known as "PASCALINE".
The machine consisted as a wooden box that could only add and subtract by means of a series of gears and wheels.
In 1673 a German mathematician G.W.Leibniz constructed a calculator called "LEIBNIZ CALCULATOR".It could do more than just add and subtract.The Leibniz calculator could also multiply,divide and find square roots of numbers.
DIFFERENCE ENGINE:
In 1823,Charles Babbage design a computing machine based on predefined formula called the difference engine.It consist on ALU.Memory and Control Unit.Unfortunately neither of these machines were completed due to technology at that time was not advanced enough and lack of financial funding.But for his pioneering work on computer he is called the "Father Of Computer".
CARD PUNCHING MACHINE:
In 1890,Herman Holerith develop a machine called card punching and reading machine.It is also called tabulating machine.The tabulating machine used punched cards to read and sort data or information.
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