Living in the Information Technology

A tally stick was an ancient memory aid device to record and document numbers, quantities, or even messages.

Tally sticks

is a mechanical device used to aid an individual in performing mathematical calculations.

Abacus

was invented in Babylonia in 2400 B.C.

Abacus

in the form we are most familiar with was first used in China in around 500 B.C.

Abacus

It used to perform basic arithmetic operations.

Abacus

Invented by John Napier in 1614.

Napier's Bones

Allowed the operator to multiply, divide and calculate square and cube roots by moving the rods around and placing them in specially constructed boards.

Napier's Bones

Invented by William Oughtred in 1622.

Slide Rule

Is based on Napier's ideas about logarithms.

Slide Rule

Used primarily for multiplication - division rootslogarithms - Trigonometry

Slide Rule

Not normally used for addition or subtraction.

Slide Rule

Invented by Blaise Pascal in 1642.

Pascaline

It was its limitation to addition and subtraction.

Pascaline

It is too expensive.

Pascaline

Invented by Gottfried Wilhelm Leibniz in 1672.

Stepped Reckoner

The Jacquard loom is a mechanical loom, invented by Joseph-Marie Jacquard in 1881.

Jacquard Loom

It is an automatic loom controlled by punched cards.

Jacquard Loom

A mechanical calculator invented by Thomas de Colmar in 1820.

Arithmometer

The first reliable, useful and commercially successful calculating machine.

Arithmometer

The machine could perform the four basic mathematic functions.

Arithmometer

The first mass-produced calculating machine.

Arithmometer

It an automatic, mechanical calculator designed to tabulate polynomial functions.

Difference Engine and Analytical Engine

Invented by Charles Babbage in 1822 and 1834

Difference Engine and Analytical Engine

It is the first mechanical computer.

Difference Engine and Analytical Engine

Name of the First Computer Programmer

Augusta Ada Byron

Augusta Ada Byron suggests to Babbage that he use the binary system.

First Computer Programmer

the year make the First Computer Programmer

In 1840

She writes programs for the Analytical Engine.

Augusta Ada Byron

the year Invented the Difference Engine and Analytical Engine

1822 and 1834

year of invented the Arithmometer

in 1820.