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Vintage First EPROM Erasable Programmable Read Only Memory 1702

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Uploaded on Apr 17, 2009

Vintage EPROM 1702 Read Only Memory
My Museum Blog http://www.microcomputermuseum.com
The EPROM was very important in the development of microcomputers because it gave the designer a way to load his custom program into non-volatile memory. LCF School LCFschoolThis program would always be ready to run at start up and not need to be loaded each time the computer was turned on.
An EPROM, or Erasable Programmable Read-Only Memory, is a type of memory chip that retains its data when its power supply is switched off. In other words, it is non-volatile. It is an array of floating-gate transistors individually programmed by an electronic device that supplies higher voltages than those normally used in digital circuits. Once programmed, an EPROM can be erased only by exposing it to strong ultraviolet light. That UV light usually has a wavelength of 253.7nm (for optimum erasure time) and belongs to the UVC range of UV light. EPROMs are easily recognizable by the transparent fused quartz window in the top of the package, through which the silicon chip can be seen, and which permits UV light during erasing.(From Wikipedia, the free encyclopedia)-----------------

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See my blog about the EPROM http://bugbookmuseum.blogspot.com/201...

Important Names & Words in the History of Microcomputers

Insai, Adam Osborne, bugbook, Ed Roberts, floppy disk, RAM chip, TRS-80, radio shack, commodore, Steve Jobs, Steve Wuzniack, WOZ, Atrai, Osborne, Adam Osborne, Heathzenith Clivesinclair, polymorphic, Ex8l, Heathkit, colleco, IBM PC, IBM PC jr., DEC, Don Lancaster, Wayne Green, teletype, Hewlett Packard, Jon Titus, Bill Gates, Apple, Microsoft, Steve Jobs, Steve Wozniak, Digital, museum, cyber, TI, IC, micro processor, Intel, logic, memory, USB, robotics, server, data, history, fiber optic, gateway, internet, texting, computer, Moores law, IBM, cyber engineer, automation, personal computer, PC, John Von Neumann, Thomas Watson, Intel 4004

This video was produced by the LCF Group, ( We are on The Crooked Road Heritage Music Trail and the Round The Mountain Artisan and Craftsman Venue as a great place to visit ) Floyd Professional Center, Village Green, Floyd Virginia. The LCF Group consist of David Larsen KK4WW, Gaynell Larsen KK4WWW and Dee Wallace KG4VMI. We are all radio amateurs and also are Directors of The Foundation for Amateur International Radio Service ( FAIRS) also located in Floyd Virginai. N4USA is the radio call for FAIRS and we have operated in Dominica as J79WW J79WWW J79VMI and many other countries. We are members of The Floyd Amateur Radio Society FARS. The LCF Group (1-540-745-2322) ham radio morse code cw amateurradio hamradio The following have activities in Floyd County, Virginia http://www.virginiamountainland.Com http://www.lcfarticles.com bugbooks http://www.bugbookcomputermuseum.com http://www.floydcountyvirginia.org http://www.fairs.org http://www.floydfolks.org and http://www.microcomputerhistorymuseum... in Floyd Virginia. Www.floydvisitorcenter.com Www.visitfloydvirginia.org http://www.bugbookseries.com http://www.bugbookcomputermuseum.com http://www.bugbook-computer-museum.com http://www.bugbook.org http://www.bugbook.us http://www.bugbook.net http://www.bugbooks.info http://www.bugbooks.us http://www.floydcountyvirginia.org http://www.fairs.org http://www.floydfolks.org and http://www.microcomputerhistorymuseum... http://www.nationalmusic.us http://www.floydvirginia.org compass magazine log cabin Roanoke mountain home www.virtualblueridge.com blue ridge Parkway Destination Center www.floydtourismdirertory.com ,David Larsen Blacksburg, David Larsen Blacksburg Group, Blacksburg Group, http://floydcounty-va.com , http://floydcounty-virginia.com , http://www.floydcounty.info , Bugbook , http://bugbookcomputermuseum.com , http://floydcountyonline.org , http://floydcountyva.org , http://floydcountyvirginia.org , http://floydfolks.net , http://floydfolks.org , bugbook series http://www.stpierrewoodworking.com http://www.floydcountyvirginia.org Bill St Pierre Floyd Virginia http://www.nationalmusic.us

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