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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
Who invented the random access memory?
The first random access memory was the Williams-Kilburn Tube (a type of cathode ray tube - CRT) invented by Freddie Williamsand Tom Kilburn in 1946 at the University of Manchester in England. It was a dynamic random access memory (DRAM) like most modern semiconductor random access memory, and like them needed to be refreshed periodically to prevent loss of data due to the gradual discharge of the capacitances used to store bits. Unlike modern semiconductor random access memory, addressing of the memory used analog waveforms which made the Williams-Kilburn Tube sensitive to drift, temperature changes, power stability, etc.
It was very popular on large high speed computers until ferrite magnetic core memory began to replace it after 1954. Magnetic core memory had the advantages of being nonvolatile static random access memory (NOVSRAM) meaning it not only needed no refresh but also retained data while power was off, as well as having all digital addressing.
Why is memory cache implemented with static ram sram and not dynamic ram dram?
Cache needs to get results as fast as possible. With SRAM you give it the address and wait the access time (which can be very short) and then the data is on the pins.
With DRAM you have to give the high part of the address, strobe Column Address Select, give the low part of the address, strobe Row Address Select, then wait for the longer access time before getting your data. Also DRAM has to be refreshed extremely often which adds about 15% overhead.
What is the computer command control?
CCC was GM's marketing brand name for their early computerized systems to control fuel mixture, spark advance, and emissions controls in their cars. On the Celebrity this was a single barrel throttle body injection system.
During normal operation what does ram contain?
During normal operation, there are several possible things RAM can contain. The most accepted answer is likely the programs you are currently running. However, RAM also contains the operating system. In addition, unused RAM likely contains random data and perhaps some data from programs that were previously running in that session.
3 factors to consider when choosing memory?
Standard (DDR, DDR2, DDR3 as it must be the same as your motherboard)
Speed (800, 1066, 1333 again must match the motherboard for optimization, can't exceed it)
Size/capacity (GBS, # of sticks)
Where is windows stored on the hd or mother board?
Windows and all of your general applications are stored onto your HardDrive. The only thing stored on your Motherboard will be the very Basic Input/Output Software. Bios for short. This is the simplist of software that allows the computer to understand what it is and begin reading more commands, such as windows software and then begin to boot up.
How primary and secondary storage handle storage for application program instructions?
when working on a Microsoft word document, why is it important to save your work often?(use primary and secondary storage to explain)
Should fastest RAM be placed in the slot closest to processor or memory controller?
If you have a mix of RAM devices with different speed capabilities on a motherboard, the memory bus will work on speed of the slowest memory. Then it does not matter which slot you put which memory.
- Neeraj Sharma
Where is the distributor on a 1996 dodge ram?
i have a 95 ram 360 and the distributors behind the intake almost touching the firewall.....just follow the plug wires to the cap
What is Shared Dual Channel DDR2?
SD DDR2 Ram is a double data rate synchronous dynamic random access memory interface. In addition to double pumping the data bus as in DDR SDRAM, (transferring data on the rising and falling edges of the bus clock signal), DDR2 employs an I/O buffer between the memory and the data bus so that the data bus can be run at twice the speed of the memory clock. The two factors combine to achieve a total of 4 data transfers per memory clock cycle.
What indicates a bad memory stick?
If your PC fails to boot, or displays a BSOD (Blue Screen Of Death), occasionally this is caused by a faulty stick of ram.
One thing you could do to test the ram, is to download a program called memtest. Have a look at this website, for more details
http://hcidesign.com/memtest/
Hope this helps
be safe
Cadishead Computers
AnswerI'm the one who asked the question. Just to clarify - I'd like to understand how I might know when one of my RAM memory sticks on my Dell PC might be deteriorating or has gone bad. Thank you. AnswerI'm the one who asked the question. Just to clarify - I'd like to understand how I might know when one of my RAM memory sticks on my Dell PC might be deteriorating or has gone bad. Thank you.Answer
There is as far as im aware, no physical way of telling if a ram stick is going bad, apart from the issues, i stated above.
The simplest way of telling, is to download the program memtest, this will physically test the ram sticks, and let you know if it is deteriorating.
Sorry I cant be of more use to you at this time.
Be safe
Cadishead Computers
What criteria affect how much video RAM is needed for a video card to hold one frame buffer?
The screen resolution(in pixels), the number of colors, and the enhancements to the color information affect how much video RAM is needed for a video card. Pg 389 of A+ Guide to managing your pc, 6th edition.
How many address lines are required for connecting CPU to 00 to 0F?
00 to 0F represents 16 addresses Binary representation is 1111 therefore you need 4 address lines to connect to all addresses
Reflexive memory relies on the cerebellum and amygdala.
i would like to know the same and one large punch with name under it you get one for doing the card and then one person gets prize also for the name under the large circle
What is VDU base memory address?
Visual Display Unit 's Base Memory Address. - Every device in a computer requires a unique base memory address ( an address that the computer systems Bi/oS uses to locate a device) As each device has a unique area of memory, the computer knows that when it uses this area it will be for that device, and thus be able to communicate with the device. Extended Bi/oS can be found on expansion cards with new functions or updated functions. This must be treated as a device so that the currecnt system Bi/oS can read the extended Bi/oS contained on the card, and use them.
How do you safely copy data from a failing hard drive?
Call data recover specialists like drive savers they will safely take backups and send you the data.
Try to use Nice to Recover Data for Mac software,it can recover lost data with high quality.
Acronyms are abbreviations for names or short phrases, made from the first letter (or letters) of the words they represent.
Notable examples are FBI, NASA, AARP, and NORAD. In all of these cases, the acronym has come to identify a unique organization.
In other cases, they abbreviate technical terms, such as CPU, RAM, and DVD. The acronym in many cases becomes the preferred term for the item or concept.
Some phrases change meaning or application over time, such as DWI to DUI, and AWOL to AOL (absent over leave) where a distinction is being made.
Acronyms (in some cases called initialisms) also form the majority of Textspeak, texting jargon that includes forms such as LOL, BRB, OMG, and BFF.
How do programs transfer in and out of memory?
give u two site maybe useful:
1> www.codefund.com
2> www.msdner.com
the big tech support site for www.itags.org
Can you use two different kind of RAM in the same time?
If by "type" you mean two different formats, like DDR and DDR2, then no. The memory controller cannot address both types at the same time, especially since they run at different speeds. The motherboard will default to the DDR2 RAM if both are installed.
However, you can use different speeds of the same format, such as 667 MHz and 800 MHz. All modules will default to the lower speed.
How much would you make programming computers?
In order to be able to answer your question, one would need to take into account the location of the "programmer-to-be", along with the number of years of experience and so forth. Computer programmers, however, in general tend to make more than let's say plumbers, but not more than lawyers. Although exceptions to the rule can always be found. I apologize for the vague answer, but it is impossible to say how much a person would make 'programming' computers (which in itself can range from embedded devices to creating webpages, to programming PLC based applications).
