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What does RAM/ROM memory in a computer do? What is the purpose of it?
RAM = Random Access Memory. This type of memory is “short term” meaning when you turn the power off everything in it is gone. This type of memory is incredibly fast when it comes to moving data around. When you load a program from your hard drive or CD it “executes” in RAM. When you close the program the RAM is typically free’d up to be used again. This is often confused with the type of memory that your Hard drive servers as, which is long term memory. When you power off your computer the data on a hard drive remains. Compared to RAM the data manipulation speed of a hard drive is a very small fraction of its speed.
ROM = Read Only Memory. This type of memory is Read Only. Typically a ROM in a computer is a single chip (however, multiple components can have their own ROM chips like a video card, a hard drive controller and the main motherboard in your computer). ROM memory typically stores the “Firmware” (otherwise known as the BIOS) which is NOT hardware and is NOT software, but sits in the middle. When I say in the “middle” I literally mean that. Any program (such as Microsoft Windows XP) has to go through a ROM routine (i.e. software instructions of how to access a piece of hardware)in order to use a device driver to access a hardware device, such as a hard drive or USB key or even write data to a video card. ROM memory is NOT lost when the computer is turned off. ROM memory is also not changeable. The type of ROM memory that can be changed or “reprogrammed” is an EPROM (or an EEPROM) chip.
Now that you know about memory, don’t forget it! 
Unc
SNES ROMs the easy way (no computer) PART 2
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52x Asus CD-ROM Internal IDE White CD-S520/A Asustek Computer $16.24 52x Asus CD-ROM Internal IDE White CD-S520/A Asustek Computer |
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Computer Memory Saver $9.99 Saves the memory of the on-board vehicle computer when the battery is disconnected. Plugs into cigarette lighter. Use with 9 volt alkaline battery (not included). |
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9 Volt Battery Computer Memory Saver $13.95 Automotive computer memory retaining tool designed to maintain the memory of the on-board vehicle computer (CCU) when the power source (battery) is disconnected. Use of this tool when changing or interrupting the power source prevents loss of certain driveability codes, keyless entry codes, digital radio setting, cellular phone settings and other memory related functions. Prevents loss of radio function on anti-theft radio systems. ? Use with 9 volt alkaline batteryBy Kastar Hand Tools. |
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MPC to MPC 4-pin to 4-pin Audio CD-ROM Cable w/ 4 Wires for Computer $4.49 Description:4-pin to 4-pin (MPC to MPC) analog CD-ROM Audio Cable / cordThis MPC Audio Cable is used for connecting CD-ROM/DVD-ROM drive to the mainboard.This MPC 4-Pin Audio Cable allows you to play audio CD from the cd/dvd drive.Connects a CD/DVD drive to the audio-in header on a mainboard.Cable length: 48cmWeight: 6.7gPackage include:1 x MPC CD-ROM Audio Cable |
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Memory Foam $9.99 The bendable MEMORY FOAM wrist rest from HandStands is a quality computer accessory |
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Complete National Geographic Complete Set DVD-ROM $79.98 Use your computer to explore 121 years of amazing discoveries, fascinating maps and the world’s best photography. Bringing you the world and all that is in it, this definitive collection contains every issue of National Geographic magazine since 1888, digitally reproduced in stunning high resolution. (7 DVD-ROM) |
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Gateway 4DX2 -50 Mini Computer 16MB Memory Upgrade $11.99 Gateway 4DX2 -50 Mini Computer 16MB FPM |
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Gateway 4DX2 -50 Mini Computer 32MB Memory Upgrade $15.99 Gateway 4DX2 -50 Mini Computer 32MB FPM |
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Gateway 4DX2 -50 Mini Computer 4MB Memory Upgrade $11.99 Gateway 4DX2 -50 Mini Computer 4MB FPM |
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Gateway 4DX2 -50 Mini Computer 8MB Memory Upgrade $15.99 Gateway 4DX2 -50 Mini Computer 8MB FPM |
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DSR Automotive Computer Memory Saver $26.95 ? This accessory connector plugs the OBD II head into the car?s OBD II source? Insert the male connector into an external power-source to save the electrical settings within the vehicle when the battery is disconnected? Protects vehicle fault codes, drivability codes, keyless entry codes and digital radio settings |
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Women Astronauts Book & CD-ROM $23.95 Women Astronauts This book is a must for any girl or young woman who wants to learn about women astronauts. How did they become astronauts? Read about every woman who has ever flown in space…their childhood, training, everyday lives, and of course, their actual missions into space! Also, find out what it takes to become an astronaut, about the selection process, training, and what it’s like to live and work as an astronaut in space, and here on Earth. In 1963, Cosmonaut Valentina Tereshkova was the first woman in space. But few people know that several American women also tried to get into space in the early 1960′s but never became NASA astronauts. Read their story and how attitudes towards women in space changed with the 1978 selection of six women astronauts. Put the CD-ROM into your computer and watch America’s first woman astronaut Sally Ride rocket into space, Shannon Lucid float on the Mir Space Station, and Susan Helms work on the International Space Station. Fly through the ISS. Watch interviews with several women astronauts. This is a fun, inspirational book for girls and young women who are interested in space exploration and becoming an astronaut. This book is also for anyone who wants to learn about women astronauts, what they do, and how they got to where they are today.The books would also make excellent guides for in-class discussions. Parents homeschooling their daughters, and who may be wondering where to find information on possible career fields, will want to include these books in the family library as well. Each biography gives readers a glimpse at the personal perspective, education, experience, and special honors each the astronauts have received. Their stories, albeit moderate in length, are inspirational and contain an abundance of information. The book is written in a direct and positive manner, and parents can feel comfortable with the content. A photograph accompanies each biography. Women Astronauts includes a CD-Rom with video interviews of eight of the women profiled. Book Details Paperback: 168 pages Publisher: Collector’s Guide Publishing Inc; Bk&CD-Rom edition (July 1, 2002) Language: English Product Dimensions: 10 x 6.9 x 0.4 inches And, click here to see our female astronaut action figure. |
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Gateway 4DX Series 4DX2 -50 Mini Computer 16MB 70ns FPM SIMM 144-pin Memory $11.99 Gateway 4DX Series 4DX2 -50 Mini Computer 16MB 70ns FPM SIMM 144-pin Memory |
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Gateway 4DX Series 4DX2 -50 Mini Computer 32MB 60ns FPM SIMM 5v 72-pin Memory $15.99 Gateway 4DX Series 4DX2 -50 Mini Computer 32MB 60ns FPM SIMM 5v 72-pin Memory |
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Gateway 4DX Series 4DX2 -50 Mini Computer 4MB 60ns FPM SIMM 5v 72-pin Memory $11.99 Gateway 4DX Series 4DX2 -50 Mini Computer 4MB 60ns FPM SIMM 5v 72-pin Memory |
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Gateway 4DX Series 4DX2 -50 Mini Computer 8MB 60ns FPM SIMM 5v Memory $13 Gateway 4DX Series 4DX2 -50 Mini Computer 8MB 60ns FPM SIMM 5v Memory |
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Apple Mac mini Desktop Computer 1.42GHz 80GB (M9687B/A) 1GB DDR-333 (PC2700) Memory Kit $39.98 Apple Mac mini Desktop Computer 1.42GHz 80GB (M9687B/A) 1GB DDR-333 (PC2700) Memory Kit |
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Apple Mac mini Desktop Computer 1.42GHz 80GB (M9687B/A) 512MB DDR-333 (PC2700) Memory $19.99 Apple Mac mini Desktop Computer 1.42GHz 80GB (M9687B/A) 512MB DDR-333 (PC2700) Memory |
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Apple Mac mini Desktop Computer 1.42GHz 80GB (M9687B/B) 1GB DDR-333 (PC2700) Memory Kit $39.98 Apple Mac mini Desktop Computer 1.42GHz 80GB (M9687B/B) 1GB DDR-333 (PC2700) Memory Kit |
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