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Jan 1, 1000
Abacus
It was invented by the Egyptians and modified by the Chinese. It was used to add and subtract by hand. It was used alot from 1000 BC to 500 BC. -
Blase Pascal
Blase Pascal is a Mathematic Genius born in France. He invented the first calculator called Pascaline. -
Pascaline
The Pascaline is invented. It can only + and -. It has 8 rotating gear and wheels. -
Gottfried Wilhelm Leibniz
Gottfried was a German Philosopher, historian, and scientist. He invented the Leibnitz calculator. -
Leibnitz calculator
It could add, subtract, multiply and divide. It's made of copper and steel. -
Charles Babbage
Charles Babbage is known as the Father of the computer. He invented the difference engine and the analytical engine.He was born in London, England and he's a Philisopher, historian and Scientist. -
Agusta Ada Lovelace
Was an English mathematican and writer. She is considered the first computer programmer. She created the first computer program for Babbage's computer. -
Difference engine
The difference engine could function to 6 difference decimal places. -
The Analytical Engine
It's the first computer. It succeeds the Difference engine. It has a memory, It uses punched cards and it also has a printer. -
Vacum tube tecnology
First compter invented for scientific work. -
Herman Hollerith
Herman is a Engineer and Scientist. He was born in USA and he founded the IBMC (International business machines coporation). He also made the mechanical tabulator. -
Tommy Flowers
He is an English Engineer, and he designed the colussus, the world's first programmable electric computer. He used that to solve encrypted German messages. -
Alan M. Turing
He is a mathematican, Philisopher, and codebreaker. He is the founder of computer science and he decoded the secret german messages for the british. -
Period: to
First Generation Computer
This generation sed Vaccum tubes. They were enormous, taking the space of the whole room. -
Cellphones
The first cellphone was 2 pounds. It was $3,995. It only allowed half an hour calling time. -
Transistors
It was equal to 3 vacuum tubes. -
Internet
It is a global network that connects millions of computers. -
Steve Wozinak
He invented the first apple computer.It is the Apple 1. It was priced $666.66. He also invented the Apple II single handedly. -
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Bill Gates
He was the founder of microsoft. He is still the chairman. -
Period: to
Second Generation Computer
Transistors replaced the Vaccum. It allowed the computer to be cheaper, and smaller. It still relied on punched cards. -
Mainframe and minicomputer
A class of smaller computers attached to the mainframs. It was invented in the 1960s. -
Integrated circuit
many transistors+ small space= integrated circuit. -
Period: to
Third Generation computer
The Ingrated circuit replaced the transisors. It had a monitor and keyboard instead of punched cards. -
Microprocessors
microprocessors times 100 million = 1 CPU -
Period: to
4th Generation computer
The computers became smaller and the computers that once fit a giant room was now able to fit in our hands. -
Laptop
It was called Osberone I and it was invented by Adam Osberone. It cost $1, 795. It came with $1,500 worth of programs. -
Tablets
It is a small touchpad computer which is light and portable. -
USB
It is a small portable tecnology which stores memory. -
Google
Founded by Larry Page and Sergey Pin. It does internet search, cloud computing, sdvertising, etc. -
Facebook
It is a socail networking site that connects friends and long-distant families. -
Youtube
A video sharing network. Anonymous users can watch videos while registered ones can upload unlimited number of videos. -
Wikipedia
It is a free encyclopedia that anyone can acess. -
Tumblr
Tumblr is a blogging site, and a social networking site. Users can follow other users and ask them a question, if the owner of the blog allows it.
