0
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
Cache memory is faster to access than RAM?
Cache memory necessarily has a smaller latency than RAM. The entire purpose of a memory cache is to reduce memory-access overhead by exploiting the principle of 'program locality' (the idea that any datum that is used at a particular point in a program is highly likely to be used again within a short period).
There are several levels of cache used in modern architectures, both on and off-chip. A modern processor will have at least a level-1 and level-2 cache on-die, with chips like the AMD Phenom II and the Intel Core i7 having L3 caches also on-chip.
The speed difference between an L1 cache and RAM latency can be anywhere between 5x to 100x faster.
Explain how virtual memory system using demand paging?
How many gigabyte for one hexa byte?
1 EB = 1,000,000,000,000,000,000 B = 1018 bytes = 1 billion gigabytes = 1 million terabytes.
C-RIMM refers to a special slot on a motherboard. It stands for 'Continuity-RIMM.' It is used to fill in RIMMs that motherboards do not use because all of them must be used.
Is 384 MB of RAM equal to 1 GB of RAM?
No. There are exactly 1024 Megabytes (MB) in one Gigabyte (GB)
MB stands for Megabyte - not to be confused with Mb which stands for megabit
GB stands for Gigabyte - not to be confused with Gb which stands for Gigabit
You have roughly about a third of a GB.
Where can you dnld up to date low memory antivirus?
one good low memory antivirus is Microsoft security essentials.it is available for free download on the Microsoft website.it took about 10 to 20 minutes to download although i have a really slow internet connection.however,you need to have a genuine windows installed on your computer to update it .
What is the relationship between the CPU and input and output devices?
it is processing part of computer like brain in us
i/p and o/p devices: these are the interfaces between cpu and human man , its like sense organs in our body(i.e through sense organs we get information from surrounding, sent to brain to think, after that we send the reply of brain through sense organ)
A CD-ROM's storage capacity is measured in Megabytes (MB), and they are generally 650-700MB.
Why sram is called static ram?
Static random-access memory (SRAM) is a type of semiconductormemory that uses bistable latching circuitry to store each bit. The term staticdifferentiates it from dynamic RAM (DRAM) which must be periodically refreshed. SRAM exhibits data remanence,[1]but it is still volatilein the conventional sense that data is eventually lost when the memory is not powered.
What is the maximum RAM you can install on tablet PC HP Pavilion tx1250ee?
The HP Pavilion tx1250ee supports a maximum of 2 GB of DDR2 RAM, each slot holding 1 GB.
What data storage device can hold more than 1 gigibyte?
The only data storage devices that do NOT hold more than 1 GB are 1.44 MB 3.5" floppy disks and the 512kb 5.25" floppy disks. All modern thumb drives, hard drives, network attached storage, etc. generally hold more than 1 GB. Some hold more than 1,500 GB.
How many phases are there in the error disk checking process?
It depends on the specific diagnostic program. There is usually various data patterns, transfers of data between different sectors, tests that exercise head movement and so forth.
What are advantages and disadvantages of an SD card?
SD Cards are small sized and thin Flash memory cards. These have many advantages. Increasing use in many Digital camera models, PDA devices and expandable MP3 players have made these very popular and cheap. These come in various speed grades and capacities. These are similar form factor as MMC cards. Another advantage is that there is a mechanical switch which acts as a write protect (to protect important data or photos from being accidentally over written).
A number of new devices with more than 4GB capacity called SDHC (SD High Capacity) based on a new standard are also in market now.
What is ROM and RAM explain their importance?
the difference is the spelling. R-A-M and R-O-M. they after important because, computer needs it.
What is the difference between memory and your harddrive?
If by "memory" you actually meant "RAM", the main difference between RAM and the hard-drive is the access time and the amount of data accessed at one time:
- modern RAM can be accessed in nanoseconds, the access time is constant, and individual bytes or words can be accessed independantly
- a hard-drive typically takes milliseconds to access, the access time varies depending on where the data to be accessed is relative to the last data accessed, and entire blocks of hundreds or thousands of bytes called sectors or clusters must be accessed at the same time
Note: there are other differences relating to physical construction, power consumption, volatility, etc.
What type of storage resides on the processor?
There are several types of storage inside a CPU.
First, there is one or more areas of cache memory. That is special static memory which is made to be fast. That is to reduce accesses to the main memory and store the most commonly used instructions.
Then older CPUs had an area known as a prefetch queue. It functions much like a cache, but is much smaller.
Finally, there are CPU registers. The registers are small areas of memory used for executing instructions and storing the results. If you wish to add two numbers, for instance, your code must copy them to the registers and then perform the addition instruction on the registers. Then the code would collect the result from the registers.
There are many different option how to reinstall the windows. I believe you choose that options which allows to keep all files from the previous operating system. If you want to get 80 Gbs back you have to format the drive (before back up your data) such option you can find during the installation process.
Or you can clean the drive manually which will take a lot of time if you have your files in different folders.
Why does my computer tell me i have low memory when i have a lot of free space on my computer?
Maybe it doesn't have a lot of space. o-O Try looking around for things you are SURE you don't need. If this continues, you may need to get more memory anyway. I have had the same problem, and your problem is RAM. If your computer is more than 2 years old, odds are you have less than a gig of ram running on your computer. If you have 256 or 512 or even 1 gig of ram, id recomend up grading. Most computer towers have 2 slots for 'sticks' of ram, and its pretty cheap to buy two 2gig sticks, giving you 4 gigs of ram!!! Open your tower up and pop them in. No software installation needed. check newegg.com for good deals on cheap ram. my two sticks cost me about $89 total.
What is kept in memory while the computer is running?
The short answer is ...... Everything.
From the moment your PC starts to show you the Windows XP ( or whatever boot screen your OS has) till the moment you shut it down. Everything you do with your computer, everything that is drawn onto the screen, everything you do while using your computer is store into the Computers Memory.
The only exceptions would be when you click file and Save on lets say a Word Document. Then that document is taken from memory and written to the hard drive.
