LIE T1 Flashcards
(35 cards)
What is computer?
Computer is a machine which can perform many task.
It was originally invented to do speedy and accurate calculations.
The word “computer” was first recorded as being used in?
1613
A computer was originally used to describe?
A human who performed calculations or computations.
was an early aid for mathematical computations
Abacus
the oldest surviving abacus was used in?
300 B.C. by the Babylonians
can work on addition and subtraction problems at the speed of?
a person equipped with a hand calculator
Where is the abacus still used today?
in the far east
Schickard’s calculating clock is invented by?
German professor Wilhelm Schickard
When is Schickard’s calculating clock invented?
1623
It is design to assist in all the four basic functions of arithmetic
Schickard’s calculating clock
It is the first gear-driven calculating machine
Schickard’s calculating clock
Schickard’s calculating clock git little publicity due to?
Schickard died in the bubonic plague
Who invented the pascaline?
French mathematician-philosopher Blaise Pascal
When is the pascaline invented?
1642
Pascaline is also called?
Arithmetic machine
the first calculator ir adding machine to be produced in any quantity and actually used
pascaline
This machine was invented to help his father who was a tax collector
Pascaline
Who invented Leibniz’s stepped reckoner
German Gottfried Wilhelm Leibniz
it is a four function (addition, subtraction, multiplication, and division) type of machine
Leibniz’s stepped reckoner
It is used for calculating the engine of a class of mechanical calculators
Leibniz’s stepped reckoner
he was the first to advocate the use of binary number system
German Gottfried Wilhelm Leibniz
A piece of stiff paper that holds digital data represented by the presence and absence of holes in predefined positions.
punched cards
Who invented the machine that can record the data from the punched cards?
Herman Hollerith
When was the punched card data processing technology developed?
at the end of 1800s
