computer history and flow ciaran lydon 10/12/07

History and flow:1940-45

By ciaran lydon

Per.5

Input

• First the information is entered through the input

Memory

• Next the information is sent to memory

• Now the information enters the micro processor

Fetch

• First information is obtained from memory

Decode

• Next Decode figures out what action to do

Execute

• Binary calculators do the math extremely fast

Output• Finely the digital information shows up

in output

The first handheld two-way radio or “handy talkie” made by Motorola in 1940

The Z3,built in 1941, was the first fully operational calculating machine

• The Electronic Numerical Integrator and Computer was the first general-purpose electronic digital calculator. Built in 1943, it is considered to be the first electronic computer.

the first portable FM two-way radio or “Walkie Talkie"

• Weighed 35 pounds

Harvard-IBM MARK I was a large program controlled machine that did vital calculations for the U.S. navy

1944

This is one of the first electronic computers to use binary

the Electronic Discrete Variable Automatic Computer

“BUG”

• The term bug came up as a computer bug was termed by Grace Hopper when programming the MARK II.