what is a portable memory?
155531
it's were you can save information from one computer and plug it in to another and view that information.
343223
SDRAM is an older type of memory and means Single Data Rate Ram (access is only on 1 edge of a cycle). No more used in new PCs (only until P3).\nDDR(2) is the current type of memory and means Double Data Rate Ram (access is on both edges of a cycle).\nThe purpose of the memory is to store the application program (read from the hard disk) from where it will be executed by the CPU. You have to select that type of memory the manufacturer suggest. Only the amount is your decision, best bet for a laptop nowadays is 2 x 512MB.
275553
(m)\n\nThis is system memory that is simulated by the hard drive. When all the RAM is being used (for example if there are many programs open at the same time) the computer will swap data to the hard drive and back to give the impression that there is slightly more memory.
40120
"holographic memory" is a slightly misleading name\nbecause it superficially sounds like it might be\na replacement for computer memory.  Actually, it\nis targetted at being more of a replacement for\ncomputer disk or DVD.\n\nThe basic idea is that data will be stored within\na volume of some media rather than only on its\nsurface.  There have been many prototypes, and\nsome products are planned for the near future.\n\nTake a look at a few of the references (below)\nfor more information.
855468
"Computer storage, computer memory, and often casually memory refer to computer components, devices and recording media that retain data for some interval of time. Computer storage provides one of the core functions of the modern computer, that of information retention."\n\nIt can come in many different forms - Hard Drives, CD-Roms, DVD-Roms, Flash Memory, and more.
499004
http://www.portablefreeware.com/?c=12&sc=66
86432
crucial.com sells good memory, and they even have a program that will tell you exactly which memory your computer can take.\n\nGood luck!
993323
well...let's have a look on how this works:\n(very simplified)\nvirtual memory is a means of page switching, it switches a memory page with a page of the same size on the harddrive,thus the aparent memory is 2 times the size of the memory page.if the system needs data from the page on the harddrive ,the page will be switched back.\n\nActually there are many pages used, of small sizes.on the harddrive there are stored in one single file,being delimitated by their size only.\nso...now imagine you have 1Gb of ram, and your computer is only used for basic things.....wouldn't be a waste of space to have a 10Gb virtual memory?\nand another thing...seeking in a small file is faster than in an extremely large file,so.....use a fair amount of space for virtual memory....not the max available as it it's pointless.\nhope this helps
907966
Do you mean a memory card that plugs into your USB port? If so that is flash memory, and yes it has a shelf life. It can only be rewritten so many times, then it gonzo. Look up MRAM in google. it is the newest thing comming out. It will be better then what we have now.
100289
Memory Type\n DDR400/333 SDRAM\nMemory Description\n Three DDR 2.5V DIMM sockets support up to 3GB with 266 memory setting. PC3200/PC2700/PC2100/PC1600 non-ECC, unbuffered DDR SDRAM memory
219347
Portable Document Format
483013
Yes.  For personal temporary storage, USB thumb drives are the best options, as they're more portable, and the capacities range from 32MB up to 2GB (and growing.)   For troubleshooting PCs, bootable CDROMs, followed by bootable thumb drives, are the best current replacements.
361052
64-bit memory chip\n\n=D
445595
Pronounced cash, a special high-speed storage mechanism. It can be either a reserved section of main memory or an independent high-speed storage device. Two types of caching are commonly used in personal computers: memory caching and disk caching. \nA memory cache, sometimes called a cache store or RAM cache, is a portion of memory made of high-speed static RAM (SRAM) instead of the slower and cheaper dynamic RAM (DRAM) used for main memory. Memory caching is effective because most programs access the same data or instructions over and over. By keeping as much of this information as possible in SRAM, the computer avoids accessing the slower DRAM. \n\nSome memory caches are built into the architecture of microprocessors. The Intel 80486 microprocessor, for example, contains an 8K memory cache, and the Pentium has a 16K cache. Such internal caches are often called Level 1 (L1) caches. Most modern PCs also come with external cache memory, called Level 2 (L2) caches. These caches sit between the CPU and the DRAM. Like L1 caches, L2 caches are composed of SRAM but they are much larger. \n\nDisk caching works under the same principle as memory caching, but instead of using high-speed SRAM, a disk cache uses conventional main memory. The most recently accessed data from the disk (as well as adjacent sectors) is stored in a memory buffer. When a program needs to access data from the disk, it first checks the disk cache to see if the data is there. Disk caching can dramatically improve the performance of applications, because accessing a byte of data in RAM can be thousands of times faster than accessing a byte on a hard disk. \n\nWhen data is found in the cache, it is called a cache hit, and the effectiveness of a cache is judged by its hit rate. Many cache systems use a technique known as smart caching, in which the system can recognize certain types of frequently used data. The strategies for determining which information should be kept in the cache constitute some of the more interesting problems in computer science.
964517
USB flash drives are NAND-type flash memory data storage devices integrated with a USB interface. They are typically small, lightweight, removable and rewritable. Memory capacity typically ranges from 128 megabytes up to 64 gigabytes [1], limited only by current flash memory densities, although cost per megabyte increases rapidly at higher capacities due to the expensive components. For example, as of October 2006, flash drives were available in retail stores at US$25 for 512MiB, US$35 for 1GiB, US$60 for 2GiB, US$100 for 4GiB, and US$160 for 8GiB. [citation needed]\n\n///
249412
Discrete memory means the video memory is not used from the computer's memory (RAM). It will come with its own memory. \n\nGraphics card with discrete memory will perform better. \n\nIf you buy a laptop say 512MB RAM with shared graphics memory of 128 MB, this effectively means that the available RAM for other process will be 396 MB.
1062266
Memory that cache/store temporary in your Processor.