Generations of Computers Second Generation Computers Employed during the period 1956-1963 ● Use transistors in place of vacuum tubes in building the basic logic circuits. Advantages:(1)Fastest computing devices of their time;(2)Easy to program because of the use assembly language;(3)Could be transferred from one place to other very easily because they were small and light;(4)Require very less power in carrying out their operations;(5)More reliable,did not require maintenance at regular intervals of time
Generations of Computers ◼ Second Generation Computers • Employed during the period 1956-1963 • Use transistors in place of vacuum tubes in building the basic logic circuits. • Advantages: (1) Fastest computing devices of their time; (2) Easy to program because of the use assembly language; (3) Could be transferred from one place to other very easily because they were small and light; (4) Require very less power in carrying out their operations; (5) More reliable, did not require maintenance at regular intervals of time
Generations of Computers .Disadvantages: (1)The input and output media were not improved to a considerable extent (2)Required to be placed in air-conditioned places (3)The cost of these computers was very high and they were beyond the reach of home users (4)Special-purpose computers and could execute only specific applications
Generations of Computers •Disadvantages: (1)The input and output media were not improved to a considerable extent (2) Required to be placed in air-conditioned places (3) The cost of these computers was very high and they were beyond the reach of home users (4) Special-purpose computers and could execute only specific applications
Generations of Computers Third Generation Computers Employed during the period 1964-1975 Use of Integrated Circuits ● Advantages:(1)Fastest computing devices;(2)Very productive;(3)Easily transportable from one place to another because of their small size;(4)Use high- level languages;(5)Could be installed very easily and required less space;(6)Can execute any type of application.(7)More reliable and require less frequent maintenance schedules
Generations of Computers ◼ Third Generation Computers • Employed during the period 1964-1975 • Use of Integrated Circuits • Advantages: (1) Fastest computing devices; (2) Very productive; (3) Easily transportable from one place to another because of their small size; (4) Use highlevel languages; (5) Could be installed very easily and required less space; (6) Can execute any type of application. (7) More reliable and require less frequent maintenance schedules
Generations of Computers Disadvantages: (1)The storage capacity of these computers was still very small; (2)The performance of these computers degraded while executing large applications,involving complex computations because of the small storage capacity; (3)The cost of these computers was very high; (4)They were still required to be placed in air- conditioned places
Generations of Computers Disadvantages: (1)The storage capacity of these computers was still very small; (2) The performance of these computers degraded while executing large applications, involving complex computations because of the small storage capacity; (3) The cost of these computers was very high; (4) They were still required to be placed in airconditioned places
Generations of Computers Fourth Generation Computers Employed during 1975-1989 Use of Large Scale Integration technology and Very Large Scale Integration technology .The term Personal Computer (PC)became known to the people during this era
Generations of Computers ◼ Fourth Generation Computers • Employed during 1975-1989 • Use of Large Scale Integration technology and Very Large Scale Integration technology • The term Personal Computer (PC) became known to the people during this era