•Whatever happens with the entered information is called processing. Different types of data result in different types of outputs.

•A computer gets an input through components like a mouse , keyboard, camera, this input is then processed through a program based on its instructions. 

•Output is usually presented on devices like a monitor , a speaker or a printer.

•Computers usually consist of three major components. A Central Processing unit , memory and input/output.
                                                                                              (Quora, 2020)

Different types of programs allow computers to perform a wide range of tasks using a set of pre defined instructions.

From large industries to small supermarkets, computers are used to control, monitor, store, edit, create, delete data . For instance , in an automotive industry a computer is used to operate machinery that requires precision and long hours. Whereas in a supermarket a computer is used for product pricing and monitoring activities.

•Different types of computers are used to perform different tasks according to the requirements set by the user.  General purpose computers maybe used for writing/editing software and documents where as a supercomputer maybe used in difficult tasks such as weather forecasting and oil/gas exploration.
                                                                                   (prezi.com, 2020)

•Unlike electric lamps, these tubes produced a lot of heat and the devices used to fuse frequently. Thus they were very costly and only large organizations could afford it.

•Punch cards, paper tapes and magnetic tape were used as input output devices. 

•The computers in this generation used machine code as the programming language.

•ENIAC (Electronic Numeric Integrated And Calculator)

•IBM-701

•IBM-650
                                                        (Tutorialspoint.com, n.d.)

Magnetic cores were being used as primary memory and for secondary storage magnetic tape and magnetic.

This generation computers use assembly language programming languages like FORTRAN, COBOL were used.

Some Examples:-

•IBM 1620

•IBM 7094

•CDC 1604

                                                                                                                   (Tutorialspoint.com, n.d.)

For inputting some information mouse and keyboard are used instead of punch cards, 

They used an operating system for better resource management and used the concept of time-sharing and multiple programming.

•IBM-360 series

•Honeywell-6000 series

•PDP (Personal Data Processor)
                                                                                                                   (Tutorialspoint.com, n.d.)

This computer is more powerful, reliable, compact and affordable, this also gave a rise to PC (Personal Computer) revolution. All the high-level languages like C, C++, DBASE etc., were used in this generation.

•DEC 10

•STAR 1000

•PDP 11

•CRAY-1(Super Computer)

•CRAY-X-MP(Super Computer)
                                                                                                                   (Tutorialspoint.com, n.d.)

AI is an evolving branch of computer science that interprets how machines think like humans.

This generations mostly uses high level languages for easy and better understanding and uses less of low level languages. It provides computers with more user-friendly interfaces with multimedia features.

•Desktop

•Laptop

•NoteBook

•UltraBook

•ChromeBook
                                                                                                                   (Tutorialspoint.com, n.d.)

•Cooney, M. (2012). ENIAC, world's first digital computer, turns 66. [image] Available at: https://www.networkworld.com/article/2291664/eniac--world-s-first-digital-computer--turns-66.html [Accessed 17 Feb. 2020].

•Lee, Sunggu. Design of Computers and Other Complex Digital Devices. Upper Saddle River, NJ: Prentice Hall, 2000.

•Definitions, H. and Hope, C. (2019). What is a Hybrid Computer?. [online] Computerhope.com. Available at: https://www.computerhope.com/jargon/h/hybridco.htm [Accessed 17 Feb. 2020].
•Tutorialspoint.com. (n.d.). Computer - First Generation - Tutorialspoint. [online] Available at: https://www.tutorialspoint.com/computer_fundamentals/computer_first_generation.htm [Accessed 16 Feb. 2020].

•Anon, (2020). [image] Available at: https://www.tutorialandexample.com/block-diagram-of-a-computer/ [Accessed 17 Feb. 2020].

•prezi.com. (2020). Why do computers exist?. [online] Available at: https://prezi.com/tgyryqend9ui/why-do-computers-exist/ [Accessed 17 Feb. 2020].

•Quora. (2020). How computers came into existence. [online] Available at: https://www.quora.com/How-did-computers-came-to-existence/answer/Naman-Banati?ch=3&share=bd11b138&srid=23nmn [Accessed 17 Feb. 2020].