By: Ryan

Period 4th

When the computer was invented? The real question is what is the

definition of the computer. Because there are many different kind of computers that have been invented since 35,000 BC.

The Inventors

The first digital computer was invented in 1939, by John V. Atanasoff and Clifford Berry at Iowa State University.

Debug???

Grace Murray Hopper was working on her machines and was having trouble on it and they found a moth in her computer so they called it a Computer Bug. So word got out that they “debugged” a computer.

The Internet

The internet was started by Lawrence Roberts.

It was was started for people to share ideas and papers through one source.

It was started in 1968.

Babbage’s Analytical Engine When was it made? In 1837. Who made it? Charles Babbage What did it look like? It was supposed to

be a huge brass, steam powered computer.

Herman Hollerith’s Tabulating Machine

Why was it invented? It was invented to tabulate census data

more efficiently than by traditional hand methods.

ENIAC?

What is it? It was used for the military to calculate artillery-firing-tables and for settings used for different weapons under varied conditions for target accuracy.

Where was it built? The University of Pennsylvania.

Program

To insert or encode specific operating instructions into a machine or apparatus.

Transistor replacing vacuum tubes Smaller size (despite continuing miniaturization of vacuum tubes) Highly automated manufactureLower cost (in volume production) Lower possible operating voltagesOperation without a warm-up

period (most vacuum tubes need 10 to 60 seconds to "warm up") Lower power dissipation (no heater power, very low saturation

voltage) Higher reliability and greater ruggedness to physical shocks

(although vacuum tubes are more resistant to nuclear electromagnetic pulses)

First Microcomputer

It was invented by Ed Roberts It was produced by the Micro

Instrumentation and Telemetry Systems.

Binary System Bits-A bit or binary digit is the basic unit of information

in computing and telecommunications; it is the amount of information that can be stored by a digital device or other physical system that can usually exist in only two distinct states.

Bytes-a unit of digital information in computing and telecommunications.

Resource Listing http://www.columbia.edu/acis/history/hollerith.html

http://inventors.about.com/od/estartinventions/a/Eniac.htm

http://www.google.com/images

http://dictionary.reference.com/browse/program

http://nobelprize.org/educational/physics/transistor/history/

http://wiki.answers.com/Q/Who_invented_the_first_microcomputer