A Brief History of Computers

ENIAC
Electronic Numerical Integrator And Calculator
(first vacum tube computer)
In use during WWII, disclosed Feb 14th. 1946.
It weighed 30 tons, 17,468 vacum tubes, 70,000 resistors,
10,000 capacitors, 1,500 relays, 6,000 switches,
consumed 174kw (that's 1,740 100 watt light bulbs!),
and required 1,900 cubic feet of space.

ENIAC

ORDVAC Mar. 1952

EDVAC Apr. 1952
Electonic Discrete Variable Automatic Computer

D.E.C. Vax 11/780
"Still the Standard by which others are measured"

Hewlett Packard

Gould PowerNode

Sun 3d

Servicing ENIAC

ENIAC II 1995
From the ENIAC on a Chip Project

Imagine ... 30 TONS and 1,990 cubic feet ... reduced to a "chip".

The very first "bug" found in a computer!
From a lab technician's service notes.
They taped the moth to the page as proof!

The very first transistor .....
It all started here.

Click on this image to see a computer clock in action.