History Of Computers By: Amanda Davis

Computer Timeline Alan Turning develops the concept of a theoretical computing machine Alan Turning develops the concept of a theoretical computing machine George Stibitz develops the concept number calculator (which makes up a foundation for all digital computers) George Stibitz develops the concept number calculator (which makes up a foundation for all digital computers) 1943-Alan Turning develops the code-breaking machine named Colossus 1943-Alan Turning develops the code-breaking machine named Colossus Howard Aiken and Grace Hopper design the MARK series of computers used at Harvard University Howard Aiken and Grace Hopper design the MARK series of computers used at Harvard University William develops his cathode-ray tube (a.k.a. CRT) storing device the forerunner to random ace4ss- memory (a.k.a RAM) William develops his cathode-ray tube (a.k.a. CRT) storing device the forerunner to random ace4ss- memory (a.k.a RAM) Donald Watts Davies joins Alan Turing in building he fastest digital computer in England (at the time) Donald Watts Davies joins Alan Turing in building he fastest digital computer in England (at the time) The first electronic computer is created in Japan by Hideo Yamachito The first electronic computer is created in Japan by Hideo Yamachito Bell Lab introduces its first transistor computer Bell Lab introduces its first transistor computer ARPA and NASA are formed ARPA and NASA are formed Douglas Englebart invent the first computer mouse Douglas Englebart invent the first computer mouse Seymour Clay invents the first supercomputer Seymour Clay invents the first supercomputer was invented by Ray Tomlinson was invented by Ray Tomlinson Apple computers were founded by Steve Jobs and Steve Wozniack Apple computers were founded by Steve Jobs and Steve Wozniack Over 45 million pc’s are in use in the U.S Over 45 million pc’s are in use in the U.S Google is founded by Sergey Brin and Larry Page Google is founded by Sergey Brin and Larry Page

Who Made the first Pc? Laptop? There is too many computers made There is too many computers made around the same time that we can not really tell who made the first computer. really tell who made the first computer. All we know for sure is that the first pc was made around 1975.The computer was made around 1975.The computer pictured below is said to be “the first laptop ever made.” The First laptops had very small screens. The First laptops had very small screens. Steve Jobs and Steve Wozinack founded Steve Jobs and Steve Wozinack founded the Apple computer in 1976

Measurement terms and Viruses Bit Bit Byte Byte Kilobyte Kilobyte Megabyte Megabyte Gigabyte Gigabyte Terabyte Terabyte Petabyte Petabyte Exabyte Exabyte Nanobyte Nanobyte RAM= Random Access Memory RAM= Random Access Memory Computer viruses are always man- made and once they are created there spread is not under human control. Computer viruses are always man- made and once they are created there spread is not under human control. Worms are computer programs that replicate functional copies of themselves. Some will interfere with the normal use of a computer. They exist as separate entitles, meaning that they do not attach themselves to other files or programs. Worms are computer programs that replicate functional copies of themselves. Some will interfere with the normal use of a computer. They exist as separate entitles, meaning that they do not attach themselves to other files or programs. A Trojan Horse is a non-replicating program. It does something undocumented which the programmer intended. A Trojan Horse is a non-replicating program. It does something undocumented which the programmer intended.

Major Computer Companies 1.Apple – Steve Jobs and Steve Wozinack 2.Dell- Michael Saul Dell 3.Toshiba-Hisashige Tanaka, Ichisuke Fujioka, and Shoichi Miyoshi 4.Samsung-Lee Byung Chull 5.Sony- Marasu Ibuka

Bibliography timelines/07-computer-history-timeline.htm timelines/07-computer-history-timeline.htm timelines/07-computer-history-timeline.htm timelines/07-computer-history-timeline.htm wozniak.html wozniak.html wozniak.html wozniak.html invented-the-first-laptop-computer/ invented-the-first-laptop-computer/ invented-the-first-laptop-computer/ invented-the-first-laptop-computer/ htm htm htm htm