Second Generation (1955-1964)
In second generation of computers solid .state transistors replaced vacuum tubes in computers It was invented in Bell Laboratories.
The transistor was far superior than the vacuum tube, allowing computers to become smaller, faster, cheaper, more energy-efficient and: more reliable. To represent data a magnetic core is used in computer. At about the some time magnetic tape and disks began to be widely used as an auxiliary storage Magnetic disk was layered by iron oxide. Magnetic disks made possible direct access of data.
As a result of these devewpments, a significant increase in the weed and processmg capability of computers was achieved Businessmen began to use computers in increasing numbers and new high-level programming languages also developed at this time, such as early versions of COBOL and FORTRAN.
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