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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
What is a memory mapped register?
A memory mapped register is a register that has its specific address stored in a known memory location.
How many kilobytes in 1 megabyte?
1 Megabyte = 1,024 kilobytes. To convert a value in Megabytes to kilobytes, multiply by 1,024.
I have had the same problem, and have gone through hours and hours of computer time trying to fix it.
As far as I can see, there is no fix. Microsoft has a patch that claims to fix it but it doesn't.
Mine happens when I try to close a folder in explorer.exe, especially a desktop shortcut folder.
I use Ghost and rewrite my C drive (all my files are on D drive), every few weeks or so. The error ("referenced memory...could not be "read"") comes back at amazingly consistent intervals after the Ghost restore process, leading me to belive that it is independent of what I do or new programs I install or anything like that.
Nothing seems to work, and it seems Microsoft doesn't know either.
Any help would be appreciated as well.
List 3 consideration when you choose memory?
The three main considerations when you choose memory are the type, capacity, and speed. You must choose the right type so that it will be compatible with your computer, more capacity and faster speed will typically help your computer to run faster.
After nisabyte is zotzabyte. Another name for nisabyte is geobyte.
Is kilobyte the smallest byte?
No. There is also a byte and a nibble byte (half a byte).
Kilo is a prefix meaning "thousand", so a kilobyte is a thousand bytes. More exact would be 1024 bytes.
What is the rate of 4 GB ram 800 mhz?
what is the rate of two 2 gb ram 800 mhz?
and what is the rate of 500 gb hard disk, Intel core to duo 2.8 ghz ,Intel motherboard 856 ,and samsung 23 " lcd monitor
What is the difference between primary storage device and secondary storage device?
- Primary Storage
- Two classifications of primary storage with which you should become familiar are read-only memory (ROM) and random-access memory (RAM).
- READ-ONLY MEMORY (ROM).-In computers, it is useful to have instructions that are used often, permanently stored inside the computer. ROM enables us to do this without loosing the programs and data when the computer is powered down. Only the computer manufacturer can provide these programs in ROM; once done, you cannot change it. Consequently, you cannot put any of your own data or programs in ROM. Many complex functions, such as translators for high-level languages, and operating systems are placed in ROM memory.
- Since these instructions are hardwired, they can be performed quickly and accurately. Another advantage of ROM is that your imaging facility can order programs tailored for its specific needs and have them installed permanently in ROM. Such programs are called microprograms or firmware.
- RANDOM-ACCESS MEMORY (RAM).-RAM is another type of memory found inside computers. It may be compared to a chalkboard on which you can scribble down notes, read them, and erase them when finished. In the computer, RAM is the working memory. Data can be read (retrieved) or written (stored) in RAM by providing the computer with an address location where the data is stored or where you want it to be stored. When the data is no longer requited, you may simply write over it. Thus you can use the storage location again for something else.
- Secondary Storage
- Secondary storage, or auxiliary storage, is memory external to the main body of the computer (CPU) where programs and data can be stored for future use. When the computer is ready to use these programs, the data is read into primary storage. Secondary storage media extends the storage capabilities of the computer system. Secondary storage is required for two reasons. First, the working memory of the CPU is limited in size and cannot always hold the amount of data required. Second, data and programs in secondary programs do not disappear when the power is turned off. Secondary storage is nonvolatile memory. This information is lost only when you erase it. Magnetic disks are the most common type of secondary storage. They may be either floppy disks or hard disks (hard drives).
- PERIPHERAL DEVICES
- Peripheral devices include all the input and output devices used with a computer system. When these devices are under control of the CPU, they are said to be on line. When they perform their function independently, not under direct control of the CPU, they are said to be off line. The following peripheral devices are used commonly for input and output. Those that perform only input are marked (I), those that perform only output are marked (O), and those that perform both input and output are marked (I/O).
- Optical Character Reader (I)
- An optical character reader reads printed data (characters) and translates it to machine code. Keyboard (I) The keyboard is used by a computer operator to communicate with a computer system.
