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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
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.
What are the common symptoms of a thermal intermittent?
when ram becomes infected by the power supply
How is CMOS RAM powered when the system if unplugged?
By an external battery that is not connected to the PSU and only used for the CMOS RAM, this could be in the form of a Coin cell Battery (a silver coin shaped battery) or a barrel soldered battery.
This is why the date and time settings are not lost when the computer is unplugged.
retrival
What is the average amount of RAM in desktop computers?
On your basic common computer today anywhere from 1 GB to 3 GBs is common. For a gaming computer 4 is about the minimum ranging all the way up to 32 which is way overkill.
Can you subsitute unbuffered SDRAM module?
Ive just been studying about all the forms of SDRAM etc, and when it came to buffered/registered DRAM I found out that normal PC's usually have upto 4 slots for SDRAM, any more gives producers of motherboards lots of electrical problems. So to solve the problem of systems that require maybe 6, 8 slots, they require special DRAM, such as buffered/registered SDRAM. This SDRAM has a special buffering chip on the address bus added to it to work as an intermediary between SDRAM & North Bridge. To take advantage of buffered SDRAM, the motherboard and brige must be able to support SDRAM. Slots requiring buffered DIMMs are keyed differently then those requiring unbuffered DIMMS so it will be physically not possible to install these DIMMs into the slots short of shaving the key. Electrically, possibly, but you have to remember that the register drives the addressing unit on the DIMM and the bridge will likely not be designed to accomidate the drain required to directly drive the memory chips on the address bus and as such may cause instability if it works at all. In addition there is a single clockcycle delay from when the address is written to the registers to when the address is propigated to the memory, in such timing errors could arrise from a bridge expecting that delay.
- you cannot use unbuffered SDRAM on a motherboard that supports buffered memory, because the notches on buffered DIMMS are in different positions than for unbuffered DIMMS.
What is the problem if your computer does not come on?
There are a couple reasons why it won't turn on.
It's not plugged in.
It got wet inside.
Or something isn't properly placed inside.
Is RAM used for permanent or temporary storage?
Ram is used for temporary storage. Ram stands for random access memory.
860 MB is the latest that I know of which is like 100 minutes I think.
The
MAR is a special register in the sense that each time it is accessed from the outside, memory senses it and
considers the new content of the MAR an address.
How many bits are there in a megabyte?
A megabyte (MB) is 1 million (1,000,000) bytes.
Roughly speaking, this means it can hold 1 million characters.
Strictly speaking, a character can take more or less than 8 bits to store, though, depending on the character and the encoding.
List five things to consider when upgrading memory?
How much memory do I need? How much RAM is currently installed in my system? How many and what kind of memory modules are currently installed on my motherboard? How much and what kind of memory can I fit in my motherboard? How do I select and purchase the right memory for my upgrade? How much memory do I need? How much RAM is currently installed in my system? How many and what kind of memory modules are currently installed on my motherboard? How much and what kind of memory can I fit in my motherboard? How do I select and purchase the right memory for my upgrade? -Mr. Spok is Greg
Most likely, as inexpensive as memory is now, your computer could probably use an upgrade. One gig is a standard minimum for windows XP, and two gigs is standard minimum for windows vista. If you have less than these on those OS you may find your computer a little sluggish.
