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Jan 1, 1001
Abacus
Abacus is the first thing to caculate easier. It is made in B.C2600 -
Period: Jan 1, 1001 to
techology
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Blaise Pascal
A french philosopher, he invented an automatic caculator but it only can add and subtract -
Gottfried Wilhelm Leibniz
He is a german who developed a caculator better than Pascal's caculator. It can add, subtract, multiply and devide. He is the first person who developed an automatic caculator with multiply and devide -
Charles Babbage
Charles Babbage is first person who developed the modern digital computer. He is also called 'grandfather of the computer'.
He would be famous but people thought he is a crazy guy. Only some people understood his idea. -
Ada Lovelace
She is the first programmer of the computer. If Charles Babbage was working hard on the hardware, Ada Lovelace is working on the software.She is a mathemetician. She is one of the person who knew the importance of the Charles Babbage's idea. -
Alan M. Turing
He is the founder pf the computer science. He is a philosopher, mathematician and codebreaker. He translated many codes from Nazis -
vaccum tube
this is the first generation of computer
This is big, made out of glass
This had many problems because the computers are huge with vacuum tube -
Mark 1
This is the first calculator -
transister
this is the second generation of computer.
It is smaller, not fragile and it stays longer than the vacuum tube -
IC
IC is the third generation of computer
It is bigger than transister, but it works 100 times better than transister -
microprocessor
Microprocessor is the 4th generation of the computer.
It is also called CPU. Microprocessor is used for many ways.
We use it for computers, phones, and other things. -
1st laptop in late 1970's
The first laptop is called GRID Compass 1100. This laptop has small screen, only black and has no design -
2nd laptop in early 1990's
The laptop has bigger screen but it doesn't have any designs yet -
3rd laptop in 2000's
This laptop has only black and has no design but it has bigger screen than the before one. -
Newest laptop
Now the laptop is colorful and has many designs
