# data[].attributes.body
beads on metal rods used for counting and calculations

# data[].attributes.body
based on logarithms

# data[].attributes.body
first stored program-metal cards

# data[].attributes.body
analytic engine

# data[].attributes.body
they used empty vacuum tubes to protect circuitry

# data[].attributes.body
a moth stuck in relay switch

# data[].attributes.body
programed UNIVAC

# data[].attributes.body
used silicon, won Nobel prize, on-off switch.

# data[].attributes.body
first fully electronic digital computer built in the U.S

# data[].attributes.body
replaced with vacuum tubes for transmiters

# data[].attributes.body
Instructions for a

computer that are loaded each time the 3rd Generation computers used computer is turned on

# data[].attributes.body
Integrated Circuits that were

made of transistors, resistors

and capacitators integrated into 4th Generation computers had

one chip

# data[].attributes.body
4th generation computers had micro chips

# data[].attributes.body
Intel 4004 Microchip had 2,250 transistors

– 1975). 256 bytes of memory

2 MHz Intel 8080 chip IBM PC

Cost $395-$495

# data[].attributes.body
people used this in most schools

# data[].attributes.body
first wide selling computer

# data[].attributes.body
many homes had them

# data[].attributes.body
lots of wireless and advanced technology