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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
Can you Recover data from PS3 hard drive?
yes as a ps3 owner i have found many ways, you have to downoad the information to a harddrive ... that's the most effective way i have found
Which is fastest to slowest - CACHE memory - RAM - virtual memory - buffer?
- CACHE memory is a very highspeed RAM coupled with CAM, placed very close to the CPU so that data and instructions that were recently read from RAM will not have to be reread when again needed within some short period of time since last read.
- RAM is randomly accessible memory, it can be fast or slow depending on its implementation and the technology used.
- virtual memory is a rather slow simulation of RAM using OS software, special memory management hardware, and a reserved swap area on a harddisk. Its advantages include: ability to run programs requiring more RAM than the machine physically has, every program can view itself as being the only one using the machine, isolation so that one crashed program will not shut down the entire machine.
- buffer simply refers to any memory device that temporarily hold information generated by one unit before it can be consumed by another unit. Some buffers are very fast, some buffers are very slow, some buffers hold only a small number of bits (maybe even only one bit), some buffers are massive RAM or FIFO memories.
How many bytes of memory is a 1Mx64 memory chip?
A 1Mx64-bit memory chip contains <1,048,576> , or <2^20> 64-bit Lwords. You could express this either in terms of MegaBits or MegaBytes. In Megabits, 64Mbits because 1Mx64 = 64Mbits and divide by 8 to get the answer in terms of bytes. You divide by 8 because there are 8 bits in 1 byte. So a 1Mx64-bit memory contains 8 Mbytes, or 64 Mbits. If the width had been 1Mx32-bit, you would have 32Mbits, and 4 Mbytes.
Semantic memory
How many location can be accessed by 8085 microprocessor?
The 8085 microprocessor can access 65536 (2^16) locations in memory, and 256 (2^8) locations in I/O space.
Well, a mother board is a circuit board of a microcomputer
Random access memory (RAM) is the machine's working memory. All programs and data must be loaded into RAM in order for the central processing unit (CPU) to execute those programs.
Turbidity (clarity) of water can be measured with a WAV monitor of a Nephelometer. WAV monitors use a turbidity tube that allows an estimate of water quality based on a visual assessment of the amount of light that is scattered and absorbed in the water sample. This method is useful during and immediately after rain storms. When measuring turbidity in the laboratory, a meter called a Nephelometer is used. It measures the amount of light scattered by the particles in the water in Nephelometric Turbidity Units (NTUs). Deb
How many terabytes of storage does 370 cameras need for 30 days storage?
Depends on the encoding and quality of the video files from the cameras. If its webcams for instance you would probably only need a few terrabytes..
How much memory in a commodore 64?
The Commodore 64 was equipped with 64 kilobytes (KB) or 65536 bytes of memory (64*1024).
It was possible to expand this memory with a memory expansion plugged in the back although the 6510 CPU could only address 64 kb so these had methods for copying data up and down from the memory expansion to the system memory.
In microprocessors, from 8086 there is 20bit address bus. This address bus is so organised that reading a word(16bit string from 8086 to 80286 and 32bit string from 80386 to PIV) starting at even address is different from reading a word starting from odd address.
suppose a word starts at 20000h address so it will placed in 20000h and 20001h respectively,then, this word is read by the microprocessor in 1 clock cycle i.e. the byte at 20000h and byte at 20001h are simultaneously read. Hence the word is read in 1 clock cycle.
but had a word started at 20001h-- 1 byte in 20001h and the other byte in 20002h
then the microprocessor is unable to read the word in 1 clock cycle. It takes 1 clock cycle to read the word from 20001h and another clock cycle to read the word from 20002h. Hence a word stored a odd location slows down the process of reading it.
this entire process is referred as Even banking and Odd banking.
a sense amplifier is used to convert a weak signal indicating the state of a computer memory cell into a strong enough signal to latch into a buffer register that the computer can read.
early computers used them on electrostatic and magnetic core memory. modern computers have them built into DRAM chips directly, so computer designers don't even usually have to think about them anymore.
What is the function of cache memory?
Cache memory is used to hold a copy of the data from the most frequently accessed memory locations to minimise calculation time. For example, a CPU's cache will hold this data so that it doesn't have to call data from the RAM for every calculation it makes, and merely draws from its local cache.
How do ram GHz affect your computer?
Hz on a RAM is the speed of which the hardware can read. the higher the Hz the faster RAM.
Can data be stored on both sides of a CD?
Most blank CDs are not double-sided. If you have one that is indeed double-sided, then yes.
On most modern computers this means 65,536 bytes (8 bits) of random access memory, which can be both read and written.
On older computers this could mean a variety of different things depending on the architecture of the specific computer, some are:
- 65,536 words of random access memory, which can be both read and written. A word could be any number of bits in length, with values from 12 bits to 60 bits being most common. No entity smaller than a full word is directly addressable on these machines.
- 64,000 words of random access memory, which can be both read and written. A word could be any number of decimal digits in length, with values from 5 decimal digits to 12 decimal digits being most common. No entity smaller than a full word is directly addressable on these machines.
- 65,536 characters of random access memory, which can be both read and written. A character was typically 6 bits in length.
- 64,000 characters of random access memory, which can be both read and written. A character was typically 6 bits in length.
- 65,536 bits of random access memory, which can be both read and written. Any individual bit or group of bits (of any length up to 65,536 bits) is directly addressable on these machines.
- etc.
One really needs to be more specific with units to be unambiguous.
What is the similarity between a hard disk and a magnetic tape?
Both are magnetic media used to store information.
Where is the RAM on a Dell Inspiron 600m Notebook?
It is located under a door on the bottom of the machine. It is a rectangular door with one single phillios screw on the edge, also there is an M along side of the door.
Binary information is data that is traditionally stored as a series of 1's and 0's. The 1's and 0's are typically used to represent true/false and on/off conditions.
Why memory management is important?
The speed of processor is very high in comparison to that of user and input/output device.... So if processor is made to wait and work in the speed to user and I/O devices the system becomes very slow... Hence, in order to make full use of processor's speed MEMORY MANAGEMENT is done
Why does an operating system reside in low memory?
This is not always true, it depends on the operating system and the bootstrap process.
What is the difference between a jeep CJ5 Laredo or a renegade model?
difference between Laredo and renegade besides all that extra chrome,the cj7 Laredo was considered the top of the line. plus the insurance was at the high end.( i know, because i had a few special ordered and the insurance was even higher than my vette).the main thing was all the chrome work. front and rear bumperettes,rims,radiator grill cover with blackpinstriping,all interior gauges,seats were accented with 2 toned silver trimwork,glovebox had Laredo letter applique in silver,shifter knobs had chrome trim,had the extra 2 inch lift,hood tie down and latches were chrome,chrome door handles on the hardtop with deep smoke tinted glass,seats were highback leather as was the center console insert,usually tilt and power steering,premium sound system,20 gal tank instead of the 16 gallon tank,and finally a ball hitch.hope this helps out
How can one increase memory space in the nokia 2626?
cannot be increased as no memory card can be put to use But you can try to erase original content (Nokia ringtones mp3, pair of games, and pictures).
