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fourth generation computers (STRANDS (SMALL PC'S FOR SMALL BUSINESS…
fourth generation computers
The microprocessor
Central Processing Unit (the CPU)
Reduced costs
manufactured in large numbers
Leads to Personal computers
BBC Micros
IBM5150
STRANDS
SMALL PC'S FOR SMALL BUSINESS AND HOME USE
consists of
Main memory - Random access memory (RAM)
the CPU
Motherboard, contains RAM/CPU plus
Hard Drive stotage for data and programs
CD/DVD drive
Killer Apps - driving the purchase of a particular machine
Visicalc for Apple
Lotus 1-2-3 for the IBM
Operating System available as open architecture and prompted clones and led to dominance by Microsoft
Increasing Usability
graphical user interface (GUI)
Rise of the internet
ARPANET
Internet 1980's
The web 1992
WORKSTATIONS - multi use computers
MINICOMPUTERS - distributed terminals, numerous users. tended to merge with Workstations by the early 1990's
SUPERCOMPUTERS - Defence, large business and government
