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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
ROM stands for Read Only Memory.
The ROM is non-volatile memory;it retains stored information even if the power is turned off (unlike RAM).This is basically used for storing programs and data that need not be altered one stored.
Processor uses ROM to store and execute programs instructions.However it is a type of prime memory and not a storage memory,therefore don't compare it with Hard Disks or CDs and DVDS etc
As the name itself suggests,the information can only be read not deleted,altered or even overwritten.This means that once a bit pattern is stored ,it is permanent or at least semi-permanent (if supports alteration).
The permanent groupincludes two types ,viz. ,ROM and PROM (Programmable ROM).
The semi-permanent also includes two types ,namely,EPROM (Erasable PROM)and EE-PROM (Electrically Erasable PROM). ROM contains the programming that allows your computer to be "booted up" or regenerated each time you turn it on. Unlike a computer's random access memory (RAM ), the data in ROM is not lost when the computer power is turned off. The ROM is sustained by a small long-life battery in your computer.
If you ever do the hardware setup procedure with your computer, you effectively will be writing to ROM.
Most likely DDR3 SDRAM. It is capable of triple-channelling, hence the three yellow label slots. :)
List 5 types of memories of a computer?
Five types of computer memory are:
Dynamic Random Access Memory (DRAM)
Synchronous DRAM (SDRAM)
Static RAM (SRAM)
Double Data Rate RAM (DDR)
Rambus DRAM (RDRAM)
A website is how many kilobytes?
A website can have a huge range of sizes, depending on its content. It is not possible to say what size, without knowing what is in it.
they guy who writ this is a . t . w . a . t ., the answer is 240!!!
How many kilobyte is 2000 bytes?
1024 bytes the actual number of bytes in one kilobyte. 2048 is typically referred to as 2 Kilobytes but that is kind of a shorthand. So, technically 2000 bytes exactly would be 1.9531 Kilobytes in the computer world anyway. It all has to do with the binary number system where 2048 is represented with 16bits as 0000100000000000. Each bit from the right to the left is worth double the value of the right most bit that is worth a decimal value of 1. So, again from right to left the bit values are 1,2,4,8,16,32,64,128,256,512,1024,2048. For example the decimal value of 2047 would look like this in binary 00000111111111111. Just add the values of each bit from right to left and you'll get it.
reading
What 3 considerations when chosing memory?
There are at least 5 considerations when it comes to choosing memory.
1. Type. The memory has to be compatible with your motherboard, be the correct family of memory, and come in the correct form factor. Even in the same families of memory, there are often multiple form factors. The ECC status is also important, and in some cases, the difference here might affect the number of pins.
2. Height. You do not want memory that is too tall to fit in the socket, if for instance, the socket is located under a huge CPU cooler.
3. Speed and latency. The faster the speed and the lower the latency, the better the performance.
4. Brand. Some brands have a better reputation than others and may be less likely to fail. In addition, some brands may be more compatible with your system than others.
5. Price. While paying more might get you faster or better quality memory, you might have an upper limit and may be willing to compromise the speed ratings a little to bring it into your budget.
How many bytes are in an exabyte?
1 exabyte (EB) = 1 quintillion bytes
quintillion = 1,000,000,000,000,000,000 = 10006 = 1018
An exabyte is 1000 petabytes, which is in turn equal to 1000 terabytes, which is equal to 1000 gigabytes, which is equal to 1000 megabytes.... and so on.
Is the secondary storage faster than main memory?
No. The secondary storage is typically slowerthan primary storage. But the secondary storage has higher capacity than primary storage.
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).
