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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 type of memory do notebook computers typically uses?
Most notebooks use a SATA Hard Disk Drive for storage. Typical notebook hard disk size is 250 to 500 GB.
For RAM, practically all personal computers use flash (solid-state) memory. Typical notebook RAM is 2 to 4 GB.
Where is RAM location in a computer?
In a desktop and in a tower they are usually close to the proccesor.On the motherboard in slot(s) that are usually the longest of slots on the motherboard.
IF you still have the old memory sticks, put them back in to see if everything is back to normal. It is important to go to System Information to view the max capacity of RAM. IF you put TOO much memory, the RAM will not operate properly. This applies to all Window systems and most Mac systems.
How much gigabytes does a 2003 e mac need?
A 2003 eMac can support a maximum of 1GB (gigabyte) of memory. They originally had 128 MB (megabyte) or 256 MB and their original hard discs were either 40GB, 60GB or 80GB depending upon the particular model. How much memory is needed depends upon what kind of work is intended to be done on the eMac.
Compare and contrast sequential access storage vs direct access storage?
The terms direct access and random access describe the same concept. They mean that an element of data or instructions (such as a byte or word) can be directly stored and retrieved by selecting and using any of the locations on the storage media. They also mean that each storage position (1) has a unique address and (2) can be individually accessed in about the same length of time without having to search through other storage positions. For example, each memory cell on a microelectronic semiconductor RAM chip can be individually sensed or changed in the same length of time. Also, any data record stored on a magnetic or optical disk can be accessed directly in about the same period
Sequential access storage media such as magnetic tape do not have unique storage addresses that can be directly addressed. Instead, data must be stored and retrieved using a sequential or serial process. Data are recorded one after another in a predetermined sequence (e.g., numeric order) on a storage medium. Locating an individual item of data requires searching the recorded data on the tape until the desired item is located.
(Tha answer was got from Managment Information System book, written by James O'brien and George Marakas)
What does 3GB DDR3 for video memory mean?
3GB is the size of the memory. DDR3 stands for "double data rate type 3" which is a high bandwidth type of memory. This is a pretty standard size for memory for those who use a computer for everyday tasks but not for high resolution images or gaming.
What do you do if the non-removable memory on your laptop is bad?
You have to make sure that it's really bad and it's a software bug. If you confirm after all tests that a hard drive or RAM memory really went bad you have to replace it with the same type.
Diagram to show the address mapping of RAM and Cache?
consider a RAM of 64 words with a size of 16 bits.Assume that this memory have a cache memory of 8 Blocks with block size of 32 bits.Draw a diagram to show the address mapping of RAM and Cache, if 4-way set associative memory scheme is used.
What has more memory- 128 MB of RAM or 2.6 GB?
1 GB is the same as 1024 MB, so to answer your question, 2.6 GB of RAM is about 20 times the amount of RAM that 128 MB is. 2.6 GB is the larger amount.
CL refers to CAS Latency or Column Address Strobe Latency to give it its full title. Basically the figure indicates the performance of the RAM module, the lower the figure the faster the RAM. In Synchronous DRAM this value is given in clock cycles, with Asynchronous DRAM is is given in nanoseconds.
Memory modules contain many memory chips. Each of these has memory portions arranged in rows and columns in a rectangular fashion - a bit like individual pigeon holes, each hole contains a portion of memory holding a small amount of data. In particular the CAS Latency value is the time it takes data in any given portion of the memory chips to become available to the modules output - how quickly the memory module gives up its data to the motherboard interface if you like.
There are 4 main measurements in evaluating memory performance, CAS latency is generally used as the standard measurement of a memory modules performance but this is not the full story. Row Address to Column Address delay (the time it takes to read the first piece of data), Row Precharge Time, and Row Active Time all indicate different aspects of the memories performance. It's like using the top speed of a car as the only measurement of its performance, a fast top speed doesn't mean a quick 0 - 60?
In general terms these are all referred to the memories "timings", lower values are always better..
Why do you use refresh in dynamic RAM?
DRAM is a type of RAM that uses each bit of information in a single capacitor within the integrated circuit,since the real capacitor leak charges therefore information stored eventually fades and is required to refresh periodically.
Your question is pretty open.. depends on the frequency, it can be slow or it could be fast
What is the purpose of Ram Drive system?
The main purpose of a Ram Drive system to make a computer operate faster. It is a faster type of temporary memory that applications can use instead of RAM.
What are the advantages of random-access memory?
Well, if you don't have RAM your PC won't start... The RAM is a temporary storage place for the processes you are initiating on the computer. The more RAM you have, the more space there is for the temp data to be stored, the RAM therefore doesn't have to be cleared as often and your PC runs much smoother and faster.
A infection that is known to be caused by a bite or byte that turns humans into lady gaga, there has been only 1 case reported of this infection.
Do GDDR5 video card run on ddr3 ram?
System RAM and Video RAM are two separate technologies, and do not directly depend on each other. It is possible to run a video card with GDDR6 on a system with only DDR1 RAM installed, and just as possible to run a video card with GDDR1 on a system with DDR3 RAM installed. Having a high speed GDDR video card will improve rendering performance, while having high speed RAM will improve loading times.
How many bits are in a megabytes?
Approximately 8,388,608 bits in 1 MB.
8bits = 1byte
1024bytes = 1KB
1024KB = 1MB
Where can one download a good diagnostic tool software?
There are many different varieties of diagnostic software that diagnose different things. Some examples of diagnostic software for a computer's RAM (Random Access Memory) are Memtest86, M2K MemScope and DocMemory Memory Diagnostic.
What is the difference between pc5300 and pc5400 RAM and are they compatible?
The basic difference between PC5300 and PC5400 random access memory is data speed, which is marginal. However, because of the slight difference, the would likely not be compatible.
What are the risks of wireless technologies?
- Anything that is broadcasted may be intercepted.
- Anything that is broadcast may be interdicted.
- Anything that is broadcast is especially vulnerable to man-in-the-middle attacks.
All of these problems are not unsolvable, but must be addressed in order to develop a secure network.
What does the IO unit of the processor do?
The input/output unit links the microprocessor to the rest of the circuitry of the computer, passing along program instructions and data to the registers of the control unit and arithmetic/logic unit. The I/O unit matches the signal levels and timing of the microprocessor's internal solid-state circuitry to the requirements of the other components inside the computer. The internal circuits of a microprocessor, for example, are designed to be stingy with electricity so that they can operate faster and cooler. These delicate internal circuits cannot handle the higher currents needed to link to external components. Consequently, each signal leaving the microprocessor goes through a signal buffer in the I/O unit that boosts its current capacity.
The input/output unit can be as simple as a few buffers, or it may involve many complex functions. In the latest Intel microprocessors used in some of the most powerful computers, the I/O unit includes cache memory and clock-doubling or -tripling logic to match the high operating speed of the microprocessor to slower external memory.
The microprocessors used in computers have two kinds of external connections to their input/output units: those connections that indicate the address of memory locations to or from which the microprocessor will send or receive data or instructions, and those connections that convey the meaning of the data or instructions. The former is called the address bus of the microprocessor; the latter, the data bus.
The number of bits in the data bus of a microprocessor directly influences how quickly it can move information. The more bits that a chip can use at a time, the faster it is. The first microprocessors had data buses only four bits wide. Pentium chips use a 32-bit data bus, as do the related Athlon, Celeron, and Duron chips. Itanium and Opteron chips have 64-bit data buses.
The number of bits available on the address bus influences how much memory a microprocessor can address. A microprocessor with 16 address lines, for example, can directly work with 216 addresses; that's 65,536 (or 64K) different memory locations. The different microprocessors used in various computers span a range of address bus widths from 32 to 64 or more bits.
The range of bit addresses used by a microprocessor and the physical number of address lines of the chip no longer correspond. That's because people and microprocessors look at memory differently. Although people tend to think of memory in terms of bytes, each comprising eight bits, microprocessors now deal in larger chunks of data, corresponding to the number of bits in their data buses. For example, a Pentium chip chews into data 32 bits at a time, so it doesn't need to look to individual bytes. It swallows them four at a time. Chipmakers consequently omit the address lines needed to distinguish chunks of memory smaller than their data buses. This bit of frugality saves the number of connections the chip needs to make with the computer's circuitry, an issue that becomes important once you see (as you will later) that the modern microprocessor requires several hundred external connections-each prone to failure.
Winn L. Rosch Hardware Bible, Sixth Edition
Can a portable hard disk be connected to different PCs with the same OS?
Certainly, that is one of the main advantages of a portable hard disc
How many photos does a 128MB memory stick hold on a 5.1 mega pixels campra hold?
A 128mb memory car would hold about 70 4mp photos. But it depends how many mp (mega pixels) you camera has. Hope this helps you dtracer (i would be grateful for any points given)
RAM is basically a computer's short-term memory, it temporarily stores the information a program requires to run while it is running. RAM runs at a very high speed when compared to hard-drive speed because it is used and needed more. In fact RAM is so important that RAM size and speed can play an equal or greater part in the computer's speed than the CPU. However the data stored in RAM is lost when the computer is switched off, so it can not be used for long term storage.
Modern computers can get up to 4GB of ram, and 512MB is required to install the latest version of Windows, "Vista." In a modern operating system, when a program starts, it allocates a small portion of RAM to itself. Upon loading files or data, the size of RAM it takes up will increase. Upon closing the program, the memory is freed up for other programs to use.
AnswerRAM also known as Random Access Memory can be explained as follows. Think of RAM as your desk where you do homework or pay bills, you have your bills or homework on top of the desk working on it, so memory is where the open programs, spreadsheets, iTunes and/or web browsers reside, once you close out a program the information is then stored on the hard drive. Since a portion of the operating system is loaded into memory when the system boots up, the more memory you have the larger the portion of the OS can be loaded which allows the system to perform faster.With the introduction of 64bit operating systems the amount of memory has greatly increased to 16GB - 48GBs of memory can now be loaded into a personal computer allowing for a lot faster load times and more information to be accessed very quickly.
With the introduction of DDR2 and DDR3 memory the speed and the threads the computer can use has increased and so systems have become more efficient.
