TECH BLAZE Computer and Technology Blog

In the year 1966 HP was invented the HP-2115 computers, this is the first computer for the HP. From the invention of this computer it enters into the market. The UNIX operating system was developed Kenneth Thompson and Dennis Ritchie. The main advantage of UNIX operating system is multi user system. In multi user system more than one uses the operating system. The UNIX operating system was written in the C language. The UNIX operating system runs in the all types of machines. The UNIX operating system is more popular in that time. In the year 1970 GUI was introduced. GUI means Graphical user interface. In the graphical user interface users are able to run mouse cursor and point to click.

Comparing to first generation and second generation computers, third generation computer size is small. These generation computers are made with semi conductors and integrated circuits. The semiconductors are made with the insulator and a conductor. Third generation computers contains operating system. The main use of operating system is it executes more than one programs in a single time. The IBM was developed IBM 360 in the year 1964 and it’s introduced in the year 1965. The IBM 360 contains 6 computers like one family and peripherals. These six computers are worked together to execute the program. These computers are used transistors but later its used integrated circuits. The PDP-8 was the first successful computers made with the integrated circuits. The PDP-8 was introduced in the year 1965. In 1965 the cost of this computer is $20,000 later the cost is reduced.