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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
Where could one go to order a stick of 4GB DDR2 RAM?
There are a number of possible options for someone wanting to order a 4GB DDR2 RAM memory stick. Misco UK, Amazon, Ebuyer, eBay and Mr Memory are all options.
What is the reason for having a cache memory?
Cache simply is for speeding up the processes already completed, since it is faster than ram, and easier to access. it basically is just for speeding up applications you use often. cache is volatile meaning that it is erased when you turn off your computer.
What is memory space fragmentation?
- Fragmentation within individual files and their metadata.
- Free space fragmentation, making it increasingly difficult to lay out new files contiguously.
- The decrease of locality of reference between separate, but related files.
A terabyte is 1 trillion bytes (1,000,000,000,000 bytes)
Decimal system: 1000 Megabytes (MB) = 1 Gigabyte (GB)
1000 Gigabyte (GB) = 1 Terabyte (TB)
Binary system: 1024 GB = 1 TB
A terabyte or TB, is equal to 1,099,511,627,776 bytes. However, the International Electrotechnical Commission (IEC) defines a TB equal to 1012, or 1,000,000,000,000 bytes.
Why rom is non volatile memory?
ROM is involatile because its name means Read Only Memory, hinting that the data stored on it cannot be altered. The word involatile means long term and not changeable.
What holds the memory data permanantly?
Non-volatile storage devices, like hard disk drives, USB flash memory, ROM flash memory or the like, etc.
They store digital data on them without electrical power.
What are the characteristics of RAM storage?
R -> Random A -> Access M -> Memory
Features:
Temporay data Storage; less efficient than ROM though it has high processor speed.
How does random access memory affect the performance of your computer?
RAM is the virtual memory of your computer; the more RAM you have, the more programs you can run at one time. However, that is just a brief explanation.
What is the definition and difference between ram rom and cache memory?
ROM (read only memory): It is the part of memory in which the data or the software related to the hardware is stored which is not to be changed frequently..
Athought the EPROM and EEPROM available now in the market have the ability to be changed easily..
RAM (Random Access Memory): It is the part of memory in which the data can be accesed fast and at random and the continuous movement of the storage is not necessary. like CD and dvds.. it is fast but the volatile since the data stored in it is erased after the system is powered off.
Cache memory: It is the part of memory in which the data from different intermediate calculations or processes is stored where the original data is expensive to fetch...
Which type of memory unable to have the contents modified?
The most accurate answer is PROM (Programmable read-only memory) a.k.a. OTP ROM (One-time programmable ROM). You can fill it with data once, but after that you cannot modify it. Example: PROM chips and CD-R.
Why is ROM a permenant memory?
RAM Stands for Random Access Memory and it used to store temporary files
Here you go..
the most common computer memory which can be used by programs to perform necessary tasks while the computer is on; an integrated circuit memory chip allows information to be stored or accessed in any order and all storage locations are equally accessible www.cogsci.princeton.edu/cgi-bin/webwn
Actually all memory (PC wise) is random access memory. RAM has come to mean read/write memory, whereas ROM (read only memory), as the name implies, can only be read from and not written to. In reference to a PC, the ROM, commonly called the BIOS, holds fixed instructions for self testing, device configuration and OS loading, while RAM is the memory that the CPU has for its workspace, e.g. holding the OS, programs, caches, etc...
a ROM chip is not temporary it is permanent. RAM chips are temporary meaning that once the voltage is discontinued to it all data is lost. (ie. you cut the power to your computer). Your BIOS chip is an EPROM (Erasable Programable Read Only Memory).
The main difference between a mainframe and a supercomputer is the physical size?
Supercomputers are designed to work on types of problems where speed is of the essence. Mainframes demand reliability and are used for performing thousands upon thousands of concurrent transactions.
What is the difference between ddr1 ram and ddr 2 ram?
The advantages as each proceed to the next DDR version. Not only is it more capable, but it is faster. However, an issue is that the latency's are really high as you go to DDR3, while they are lower in DDR1 and DDR2. I am not sure for the reason of this, however I will define latency. Latency is the time it takes the RAM to 'communicate.' The higher the latency, the worse. However, somehow, DDR3 uses high latency and yet it is faster than DDR2 and DDR1.
Pro-tip: DDR versions are not interchangeable. For example, I can't put a DDR2 RAM stick in a DDR3 memory module. The notches are orientated differently to prevent this. Check your DDR version before buying RAM, and buy the right kind!
Is RAM an external memory of the computer?
I just read this, as I was curious myself on this topic. The answer is: Yes, if you have Windows Vista! It utilizes anything with memory that is plugged into a USB port. So, you could essentially oost your computer speed -If only microscopically- with the average I-pod or USB stick. I am not sure what the transfer is, so you could look that up if you really need to know... Hope this helps! --Ironfist221--
What part of a computer store the memory?
From a technical standpoint of view, computer memory stores multiple bits of information. Each bit is an atomic boolean entity (it can be in one of two states, True or False, 0 or 1, etc). Computer memory typically stores large numbers of bits, commonly but not necessarily arranged in groups of bits. Eith bits (an octet) are commonly known as a byte, but other grouping, typically in powers of two, is common.
Semantically, computer memory can store anything for which there is a digital description. It can store numbers, or the works of Shakespeare, or you digital holiday photos. It cannot store items such as a perfume, or a smell (such as the perfume's frangrance), but it can store the perfume's recipie along with a chemical formula for the fragrance's aromatics.
Is primary storage another name for memory?
Yes...Primary storage or main memory or internal memory is often referred to as memory.
How many memory locations address bus can access?
A 10 bit address bus can address 210, or 1024 different locations.
What are the parts of diskette?
The Drive
The major parts of a FDD include:
- Read/Write Heads: Located on both sides of a diskette, they move together on the same assembly. The heads are not directly opposite each other in an effort to prevent interaction between write operations on each of the two media surfaces. The same head is used for reading and writing, while a second, wider head is used for erasing a track just prior to it being written. This allows the data to be written on a wider "clean slate," without interfering with the analog data on an adjacent track.
- Drive Motor: A very small spindle motor engages the metal hub at the center of the diskette, spinning it at either 300 or 360 rotations per minute (RPM).
- Stepper Motor: This motor makes a precise number of stepped revolutions to move the read/write head assembly to the proper track position. The read/write head assembly is fastened to the stepper motor shaft.
- Mechanical Frame: A system of levers that opens the little protective window on the diskette to allow the read/write heads to touch the dual-sided diskette media. An external button allows the diskette to be ejected, at which point the spring-loaded protective window on the diskette closes.
- Circuit Board: Contains all of the electronics to handle the data read from or written to the diskette. It also controls the stepper-motor control circuits used to move the read/write heads to each track, as well as the movement of the read/write heads toward the diskette surface.
FROM: http://computer.howstuffworks.com/floppy-disk-drive2.htm
How do you transfer photos to memory card?
Most memory cards, such as memory sticks and flash disks, can be treated as a removable disk. Look in the "my computer" folder and you should see a removable disk that wasn't there before. Just copy files to that disk much the same as you would to a floppy or a directory.
Is rebooting a computer mean losing all files in the computer memory?
Rebooting a computer simply means restarting the computer which will leave all your files intact. Restoring a computer however, restores your computer back to how it was when it left the factory meaning all additional added data by yourself and others would be completely erased.
How do cache memory improve the system performance?
Caches are meant to improve memory access performance of the computer system.
There are hardware caches implemented as well software caching is also done in Operating system to improve performance.
What advantage does DRAM have over SRAM?
Dynamic Random Access Memory contents need to be continuously refreshed. When its contents are being refreshed, memory can not be read from nor write to. Another point to note is that DRAM is cheap to manufacture (This could be the only advantage it has to SRAM).Where as in Static Random Access Memory, memory need not to be continuosly refreshed and therefore memory can be accessed at any time. SRAM is expensive to manufacture.
