ASSIGNMENT NO. 01
Computer:
Computer is an electronic device which process raw data input into meaningful information output and
also store output for later use.
HISTORY OF COMPUTER :
Early computer machines;
Abacus: [2500BC]
This is a hand held device made of beads stung on rods in a frame.
The rod correspond to the positions of the digits.
Image of abacus
NEPLER.S BONE [2500BC]
This was introduced by John Naples’s 1550 to 1670.
This is consist of small Rod With appropriate markings on them.
It is a mechanical aid to computation that consist of nine such rods[ called bone] with one of each digit
one through 9 also Invented Logarithm which made possible to do division and multiplication by
, performing addition and subtraction which made possible to do division and multiplication by
performing addition and subtraction.
SLIDE RULE [1600AD]
Slide rule is written by William oughtered 1575-1660.
He invented it in 1622 but announced it in 1632 this consist of rules on which markings
represent logarithm of numbers and also permits calculation involving exponents
Trigonometric functions ETC.
PASCAL MECHANICAL. CALCULATOR [1600]
Pascal mechanical calculator or numerical wheel calculator: blaise Pascal[1623-1664],In 1642
invented the first adding machine called pascaline.
The brass rectangular box used 8 movable dials to subtract and add up of eight fingers long
using base 10 .
It can perform all the four arithmetic operation with previous unheard speed.
LEIBNITZ MECHANICAL MULTIPLIER [1600]
In 1694 Gottfried William oughtered leibnitz 1646-1716 improved upon the percalines by
creating am mechanic that can also multiply using a system of dials and gear.
Computer:
Computer is an electronic device which process raw data input into meaningful information output and
also store output for later use.
HISTORY OF COMPUTER :
Early computer machines;
Abacus: [2500BC]
This is a hand held device made of beads stung on rods in a frame.
The rod correspond to the positions of the digits.
Image of abacus
NEPLER.S BONE [2500BC]
This was introduced by John Naples’s 1550 to 1670.
This is consist of small Rod With appropriate markings on them.
It is a mechanical aid to computation that consist of nine such rods[ called bone] with one of each digit
one through 9 also Invented Logarithm which made possible to do division and multiplication by
, performing addition and subtraction which made possible to do division and multiplication by
performing addition and subtraction.
SLIDE RULE [1600AD]
Slide rule is written by William oughtered 1575-1660.
He invented it in 1622 but announced it in 1632 this consist of rules on which markings
represent logarithm of numbers and also permits calculation involving exponents
Trigonometric functions ETC.
PASCAL MECHANICAL. CALCULATOR [1600]
Pascal mechanical calculator or numerical wheel calculator: blaise Pascal[1623-1664],In 1642
invented the first adding machine called pascaline.
The brass rectangular box used 8 movable dials to subtract and add up of eight fingers long
using base 10 .
It can perform all the four arithmetic operation with previous unheard speed.
LEIBNITZ MECHANICAL MULTIPLIER [1600]
In 1694 Gottfried William oughtered leibnitz 1646-1716 improved upon the percalines by
creating am mechanic that can also multiply using a system of dials and gear.
