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The period of fourth generation was from 1971 to present. The fourth generattions of computers was developed using microprocessor.
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1972 they use a device called microprocessor they are smaller and easy to use.https://www.youtube.com/watch?v=ON13BwDIzPg https://nawangproject.files.wordpress.com/2013/10/four-g.jpeg
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1973-The development of microprocessor signaled the beginning of the fourth generation of computers. The examples are The computers having artificial intelligence and high processing capacity https://www.youtube.com/watch?v=QnXw_o1nmF0º http://2.bp.blogspot.com/-4C_hgb8XoEc/VczIaKhcPVI/AAAAAAAAAJ8/jUebDvMSfvs/s1600/keyboards%2Bn%2Bmonitors.jpg
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1974 of fourth generation computers is that the CPU is a single integrated circuit (microprocessor or microcontroller) https://www.kullabs.com/classes/subjects/units/lessons/notes/note-detail/980 http://2.bp.blogspot.com/_xYUbDsAmssg/TFlfUsOIljI/AAAAAAAAAI4/mGW15ybESgI/s200/fourthgeneration.gif
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1975- is credited as one of the first microcomputers. It was produced in 1975 by Micro Instrumentation Telemetry Systems labeled as a personal computer; PC. Ed Roberts, the head of MITS, designed it using a Intel 8080 CPU chip (first 16- bit microprocessor) and a sleek metal case. Once a monitor and keyboard were sold with it, the sales increased greatly. It was the initial influence of personal computing in the world.
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1976-In the history of computing hardware, computers using vacuum tubes were called the first generation; transistors and diodes, the second; integrated circuits, the third; and those using microprocessors, the fourth. https://www.youtube.com/watch?v=QnXw_o1nmF0 http://2.bp.blogspot.com/_bKCxAmGdbJs/SXeHEKTwa2I/AAAAAAAAACA/j1SdOmuL2Qs/s400/4th_generation_2.bmp
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1977-The first of several personal computers released in 1977, the PET comes fully assembled with either 4 or 8 KB of memory, a built-in cassette tape drive, and a membrane keyboard. The PET was popular with schools and for use as a homecomputer. It used a MOS Technologies 6502 microprocessor running at 1 MHz. https://funfunfuncomputer.wordpress.com/2013/10/10/4th-generation-computer-1971-today-the-microprocessor/
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1978-The Four Generation Of Computers. Vacuum Tubes - The first computers used vacuum tubes for circuitry and magnetic drums for memory, and were often enormous, taking up entire rooms. https://www.youtube.com/watch?v=5iJHQZxuVvM https://i.pinimg.com/736x/64/a4/64/64a464a33fa13f0fb5d5e4f86d69efbd.jpg
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1979-https://ci6.googleusercontent.com/proxy/VYGo3rqb_n9uR9e-e1Z_4HQQIbaPEbDjS0JWaU2GzQf2FBvBMKXCR4SbUrTyUwpC0QTTomc6Y8hUE0Pu0VJB2cxr453css44yTS968o8O8ZazmTrjgUWHfre25_vp34C9o_wx1j0ZDVUJVMgpCqkyaLeNcHhpKbgXlnfx1OH0pgxJbhKV3XZ1hWGIn2oqwEEgi-9qk1nJ3s6-e9Y8vor8N7XGEiCE_iA=s0-d-e1-ft#https://image.slidesharecdn.com/jeiraaicpresentation1-140424113222-phpapp02/95/the-generation-of-computer-by-pjeyapiranavan-10-638.jpg?cb=1398339307 https://www.youtube.com/watch?v=tJ3lwYyXv08
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1980-In the history of computing hardware, computers using vacuum tubes were called the first generation; transistors and diodes, the second; integrated circuits, the third; and those using microprocessors, the fourth. https://www.youtube.com/watch?v=g1EpaIEQXrQ https://s3.amazonaws.com/s3.timetoast.com/public/uploads/photos/8106508/61288.jpg?1478333962
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1981-
The microprocessor brought the fourth generation of computers, as thousands of integrated circuits were built onto a single silicon chip. ... The Intel 4004 chip, developed in 1971, located all the components of the computer—from the central processing unit and memory to input/output controls—on a single chip. https://slideplayer.com/slide/8097454/ - http://www.digitalimage4k.com/wp-content/themes/shopperpress/thumbs/pcsystem.jpg
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