- 
  
  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 is a Mathematic Genius born in France. He invented the first calculator called Pascaline.
- 
  
  The Pascaline is invented. It can only + and -. It has 8 rotating gear and wheels.
- 
  
  Gottfried was a German Philosopher, historian, and scientist. He invented the Leibnitz calculator.
- 
  
  It could add, subtract, multiply and divide. It's made of copper and steel.
- 
  
  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.
- 
  
  Was an English mathematican and writer. She is considered the first computer programmer. She created the first computer program for Babbage's computer.
- 
  
  The difference engine could function to 6 difference decimal places.
- 
  
  It's the first computer. It succeeds the Difference engine. It has a memory, It uses punched cards and it also has a printer.
- 
  
  First compter invented for scientific work.
- 
  
  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.
- 
  
  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.
- 
  
  He is a mathematican, Philisopher, and codebreaker. He is the founder of computer science and he decoded the secret german messages for the british.
- 
  
  This generation sed Vaccum tubes. They were enormous, taking the space of the whole room.
- 
  
  The first cellphone was 2 pounds. It was $3,995. It only allowed half an hour calling time.
- 
  
  It was equal to 3 vacuum tubes.
- 
  
  It is a global network that connects millions of computers.
- 
  
  He invented the first apple computer.It is the Apple 1. It was priced $666.66. He also invented the Apple II single handedly.
- 
  
  He invented the www. He is also the president of the www foundation.
- 
  
  He was the founder of microsoft. He is still the chairman.
- 
  
  Transistors replaced the Vaccum. It allowed the computer to be cheaper, and smaller. It still relied on punched cards.
- 
  
  A class of smaller computers attached to the mainframs. It was invented in the 1960s.
- 
  
  many transistors+ small space= integrated circuit.
- 
  
  The Ingrated circuit replaced the transisors. It had a monitor and keyboard instead of punched cards.
- 
  
  microprocessors times 100 million = 1 CPU
- 
  
  The computers became smaller and the computers that once fit a giant room was now able to fit in our hands.
- 
  
  It was called Osberone I and it was invented by Adam Osberone. It cost $1, 795. It came with $1,500 worth of programs.
- 
  
  It is a small touchpad computer which is light and portable.
- 
  
  It is a small portable tecnology which stores memory.
- 
  
  Founded by Larry Page and Sergey Pin. It does internet search, cloud computing, sdvertising, etc.
- 
  
  It is a socail networking site that connects friends and long-distant families.
- 
  
  A video sharing network. Anonymous users can watch videos while registered ones can upload unlimited number of videos.
- 
  
  It is a free encyclopedia that anyone can acess.
- 
  
  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.
