Page 14 - iPlus_Ver_2.0_class_5
P. 14
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 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 PC, which was used by 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.
Info Byte
Intel introduced the Intel 4004, the first microprocessor in 1971.
12
iPlus (Ver. 2.0)-V

