Uploaded on

 

More in: Technology , Business
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to comment
    Be the first to like this
No Downloads

Views

Total Views
190
On Slideshare
0
From Embeds
0
Number of Embeds
0

Actions

Shares
Downloads
0
Comments
0
Likes
0

Embeds 0

No embeds

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
    No notes for slide

Transcript

  • 1. COMPUTER HISTORY NAME: MARIA SANCHEZ ENGLISH CLASS
  • 2. COMPUTER HISTORY
  • 3. The first mechanical calculating machine.
    • The first mechanical calculating machine, a precursor of the digital computer was invented in 1642 by French mathematician Blaise Pascal. One device used a series of wheels on which ten teeth each tooth representing a digit from 0 to 9.
  • 4. The First Mechanical Calculating Machine.
  • 5. ANALYTICAL MACHINE
    • Also in the nineteenth century British mathematician and inventor Charles Babbage worked out the principles of modern digital computer. He invented a series of machines, as the Difference Engine, designed to solve complex mathematical problems.
  • 6. ANALYTICAL MACHINE
  • 7. EARLY COMPUTERS
    • Analog computers began to be built in the early twentieth century. The first model calculations performed by rotating shafts and gears. With these machines evaluated the numerical approximations of equations too difficult to be able to be resolved by other methods.
  • 8. EARLY COMPUTERS
  • 9. ELECTRONIC COMPUTERS
    • During World War II (1939-1945), a team of scientists and mathematicians working in Bletchley Park, north London, created what was considered the first fully electronic digital computer, the Colossus. By December 1943, Colossus, 1500 incorporating valves or vacuum tubes, was already operational. It was used by the team led by Alan Turing to decode encrypted radio messages from the Germans.
  • 10. ELECTRONIC COMPUTERS