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Computer Memory
The computer memory is a physical device used to store data or programs for use in a computer. Some types of computer memory include RAM (random access memory), ROM (read-only memory), and page cache.
4,434 Questions
Why would you use a computer's secondary memory?
to look at files on your home computer on a public computer
A small amount (normally less than 1MB) of high-speed memory residing on or close to the CPU. Cache memory supplies the processor with the most frequently requested data and instructions. Level 1 cache (primary cache) is the cache closest to the processor. Level 2 cache (secondary cache) is the cache second closest to the processor and is usually on the motherboard.
AnswerA cache, in computer terms, is a place to store information that's faster than the place where the information is usually stored. Cache memory is fast memory that is used to hold the most recently accessed data in slower main memory. The idea is that frequently accessed data will stay in cache, which allows the CPU to access it more quickly, which means it doesn't have to wait for the data to arrive.
In reference to your processor, the Cache Memory is the Processor's internal quick-hand storage that it uses for things that it's currently processing at that given time.
As with most things, the more cache memory a processor has, it will usually run smoother and faster than one with less of about the same operating frequency.
Answer- Cache memory is usually "On Die" which means it is in the processor chip, which allows it to 'talk' with the processor direct at a much higher speed than standard RAM.
- cache is a small chip, that's usually placed inside the CPU or sometimes its right next to it and is responsible for providing direct access to the commonly used programs, rather than going back to the hard disk and ram again and again
so cache makes it more fast than RAM, you know!!!
Pronounced cash, a special high-speed storagemechanism. It can be either a reserved section ofmain memory or an independent high-speed storage device. Two types of caching are commonly used inpersonal computers: memory caching and disk caching.
A memory cache, sometimes called a cache store orRAM 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 mostprograms 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.
Some memory caches are built into the architectureof 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.
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I would like to point out the disadvantage of the Cache...Just in case the Cache memory is full and data that is required to process or an application required to run doesn't fit into the Principle of Locality (that is not in the near by location) then it is obvious that the time required for the main memory to access the information would increase...coz first the the data need to be relocated into the cache and then process over here if the cache memory was missing it would be quicker...furthermore being such an extensive memories they are very small in Memory Size which requires location and relocation of the data or applications.
It allows commonly accessed data to be stored in full and referenced faster than recompiling the data each time.
Maximum amount of memory on Intel 915GM chipset?
2GB total, though that may mean 1GB per slot. reference: http://www.intel.com/products/notebook/chipsets/915gm/915gm-overview.htm
What is the difference between making a donation in honor or in memory of someone?
If the person in question is alive, you make a donation in honor of him, and if he's dead, you make a donation in memory of him.
What year was the battering ram made?
The battering ram was made in the year 3000....Look up the song "Year 3000" by the Jonas Brothers to find out more!!!
Why does your computer show 67MB of RAM available out of 256MB?
Ram is memory. That means you have 67MB of ram left for you to use out of your 256MB of memory.
== == Really depends on the type and what size sticks you are buying it in. You can get a 512 MB stick of most types of ram for about 15-20 dollars, or a 1GB stick for about 40-50. A good website to find the cheapest ram is pricewatch.com.
Make sure you get name brand memory like Corsair, Crucial, Kingston, Geil, Patriot, etc. Stay away from anything "Generic" or "House Brand". Memory isn't a place to skimp, bad memory will make your whole system unstable at best or at worst it'll be uncompatible with your computer
What are the differences between read-only and full access?
Read-Only-Memory is a file that you can ONLY read. You cannot edit, alter or change this in any way. When it is Full Access, you CAN edit it.
Explain the properties of the main memory in a computer?
1. To store data
2. Runs the programs, the more RAM, the faster the program can be ran.
The difference in capacity vs. usable space on an 3.5 inch floppy disk is related to the FAT - file allocation table. This is an area that is reserved for machine and directory instructions.
To explain what this means is that most disks are referred to their unformatted size.
If you then create a 'protocol' format on the disk to support a particular operating system then this uses some of the space on the disk to do its housekeeping in. Therefore there will be a discrepency between the unformatted size and the formatted size.
The same is true of hard drives which are quoted in their unformatted size, which is then reduced after formatting. The amount of space loss is congruent with the size of the disk. The larger the disk the more space is used to store the format.
How do you get more volume from my computer?
if you have only the CPU there should be a + and - sign. use these for volume. they are often at the top of the keyboard. e.i. for me its top right. for speakers there should be a knob to turn. try headphones/earbuds.
I will add this:
Double-click on the little speaker in the sys tray (extreme bottom right of the screen) and maximize all the volume controls...because the sound source you are trying to increase might be wave, CD, synth, mic, whatever. So maximize all of them and figure out the one you need later.
If this does not work, you might need to purchase an amplified sound sysytem which will usually come with instructions as to its setup. If it does not, or if the sales personnel cannot advise you, then don't buy it.
What role does the memory play in the functioning of a computer system?
it is used by computer to store contents
What are the types of the memory?
CPU cache - where your CPU can receive and writes information to it. It very small but very fast RAM- random access memory- where the most used files are held like your system file operationing system, last used file/ information/ application. It lost all information written on if the ram lost power to it
ROM- read only memory - where CPU/computer can can read it but can not write to it. Examples: cd rom DVD rom blue ray movies
Storage (hard drives both external and internal; soild state drive (ssd); thumb drives (USB drive); rewriteable cd/DVD/floppy disks) where your operation system files,your pictures, program files,and any you save to your computer will be saved here. It keep all information even if you shut down the computer
Why is programable read only memory used for?
Programmable Read-Only Memory (PROM) is used for making firmware for various devices. They differ from the older ROM chips in that they can be erased using UV light and reprogrammed. That is why they have a heavy foil label on the back. The label covers the erasure window to protect it from accidental erasure.
Some of the examples of the applications for PROM chips include:
Automotive computer - The PROM or EPROM stores the defaults for running the car.
Computer ROM BIOS - This is the instructions needed for a computer to even work.
Industrial machinery - The PROMs would contain custom code for running the machinery.
Modem firmware - The PROM chips may contain proprietary communications protocols and compression code.
Cache memory was invented by Maurice Wilkes. It was intended to be used as a type of recent data safeguard between the physical memory and the processor.
Which peripheral port type was designed to transfer data at high speeds over a D-sub interface?
IEEE 1284 is the only answer but there is a catch: It can be used to connect to other devices as well but is mostly used to connect printers.
There are two versions (modules) of IELTS to choose from:
IELTS Academic
IELTS General Training
The Academic Version is intended for those who want to study or train in an English-speaking university or Institution of Higher and Further Education.
Admission to undergraduate and postgraduate courses is based on the results of the Academic test. IELTS Academic may also be a requirement to join a professional organisation in an English-speaking country.
The General Training Version is intended for those planning to undertake non-academic training or to gain work experience, or for immigration purposes. It is typically for those who are going to English-speaking countries to do secondary education, work experience or training programs. People migrating to Australia, Canada and New Zealand must sit for the General Training.
How many hours of film can 1 Tera byte hold?
The amount of space needed to store video files will depend upon the amount of compression applied to the file. In general one terabyte will store around one thousand hours of compressed commercial movie quality video.
How much memory can be added to a dell latitude c840?
The c840 specs say 1Gb total (2x512mb of DDR pc2100 SODIMM memory).
As I understand it, upgrading the BIOS to A013 allows the system to recognize 2Gb.
How are homemade hat pins made?
Some of the stuff I have read about this on the internet says they are pretty easy to make with long needles from sewing stores. You have to put beads on the ends.
What disks are permanently stored on a computer?
None!
Or you can take all disks out or they can be broken
So always back your work up!!!
3-D arrays can be represented as a single dimension of tables. Each table has rows and columns. Each table may also refered as Page. Let a[x][y][z] is an element of a three dimensional array 'a' at the xth Page, Within that page yth row and zth column. In memory it will be stored as sequence of memory locations. Suppose array index starts from 0,0,0. If the first element of the array is stored in location M, The address of the a[i][j][k] = (i-1)U2U3 + (j-1)U3 + (k-1), Where U2 and U3 are the dimention of a table.
The worst fit algorithm is a means by which an operating system can choose which space in memory to store information (this algorithm can also be used for allocating hard disk space). The algorithm searches for free-space in memory in which it can store the desired information. The algorithm selects the largest possible free space that the information can be stored on (i.e., that is bigger than the information needing to be stored) and stores it there. This is directly opposed to the best fit algorithm which searches the memory in much the same way as before, only instead chooses the open memory space which is the smallest available which the information can be stored in (i.e., that is bigger than the information needing to be stored).
