-
20th century
invention of electricity -
Period: to
1st generation
Electronical numerical integration and calculator.
large and expensive.
vacum tubes.
their main memory were magnetic drums and magnetic tape.
they consumed a lot of electricity and generate a lot of heat. -
Period: to
2nd generation
they used transitors .
they were smaller.
they were faster and cheaper.
magnetic cores were used as the primary memory and magnetic tape and magnetic disks as secondary storage devices. -
Period: to
3rd generation
integrated circuits.
faster.
cheaper.
less electricity.
fewer mistakes. -
Period: to
4th generation
micro proccesor (small silicon chip with thousands of circuits).
smaller.
portable.
cheaper.
less electricity.
less heat. -
Period: to
5th generation
scientist are developing technology that can "think" on its own (artifical inteligence)