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Third Generation (1960s)
In the third generation, the invention of Integrated Circuits (IC) led to smaller-sized
computers with better functioning and more storage.
Features of Third Generation Computers
• These computers were made of ICs.
• The use of the ICs reduced the size and increased
the speed of the computers.
• They were more affordable and dependable.
Integrated Circuits
Fourth Generation (1970s)
In the 1980s, Very Large Scale Integration (VLSI) came into existence in which thousands
of transistors were placed on a single chip called a microprocessor.
Microprocessor IBM PC
IBM released their first line of desktop PCs, which used the Intel 8088 chip as their CPU.
In 1983, IBM introduced the PC-XT, which had more memory and more hard drive space.
In 1985, Microsoft released the first version of Microsoft Windows.
Features of Fourth Generation Computers
• Microprocessors were invented.
• Small in size and could be placed on an office table.
• Hard disk to store data.
• Introduction of GUI operating system.
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