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Computers introduction for class 5 students is given in my ppt
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Introduction To Early Computers
Abacus
• Its the first known device used for calculation• It was invented more than 5000 years ago• It was used in china for counting
Difference Engine
• Charles Babbage designed the Difference Engine in 1822 to prepare mathematical tables
• It had many similarities with modern computer
MARK-1
• It was first automatic digital computer• It was made in 1944
ENIAC
• It was the first general purpose computer• It used vaccum tubes• It was very large in size.
Generation 1 : ENIAC The ENIAC (Electronic Numerical Integrator and Computer) was unveiled in 1946: the first all-electronic, general-purpose digital computer
UNIVAC-1
UNIVAC-1
• It was made in 1951• It was faster than previous computers.