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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

How do you lower physical memory usage?

You can lower the physical memory (RAM) usage by running less applications as much as you can. Stop the applications from running in windows start up. Close the applications and services which you are not using. Increase the virtual memory of the system as it will act same as physical RAM. Here are few steps to stop the applications running at start up:

- Go to Run and type in msconfig

- Go to the Services tab and uncheck all services that you know you don't need (becareful dont uncheck the services you are not familiar with)

- Go to the Startup tab and uncheck any startup items you don't need.

- Hit OK and reboot.

What are two types of RAm?

DDR which is old and DDR2 is the most widely used. The DDR stands for Double Data Rate. DDR3 is next.

Command to show information about RAM?

By using freeware utility called CPU-Z by which I find out many useful information about my computer's CPU, mother board and RAM.

What is the difference between minimum and recommended RAM?

Minimum is the amount you need just to use it. Recommended is the amount it is advised you have for best performance.

Specify the number of registers in a 2k memory chip?

1kb=1024 byte is multiply by the total memory which is given to you as bellow:

(1024*2) = 2048 register

How long can information stored electronically?

information on the electronic device remain stored till the device is not switched off or it remain stored till the device has capability to refresh it self at the regular intervals.

How does virtual memory optimize performance of your operating system?

It allows hard disk space to be used as RAM

It acts as an overflow buffer for the physically available

How many gigabytes are in a Carl Sagan byte?

According to wikipedia: "sagan has been defined as a unit of measurement equal to at least four billion, since the smallest number that may be described as billions and billions must be two billion plus two billion".

According to google calculator: "four billion bytes = 3.7252903 gigabytes".

So sagan byte is at least 3.7252903 gigabytes.

Why DRAM is commonly used as main memory?

Access speed. Read/writes per second. Memory is, as with all technology, in constant metamorphosis. You have DRam, SDram, DDR, DDR2, DDR3, and several others. Its all about what mhz they operate at. The higher the frequency, the faster the access. The newer stuff is not only faster, but uses less energy and has higher capacity due to increasingly efficient nano-technology (ie: the size and spacing of the circuit paths).

If we were to use a physical media such as a hdd for main memory, even with today's uber-fast sata drives, you'd be surprised at how much slower it would run. Thank the techno-gurus that we're long past having to pull out a half dozen 5.25 floppies just to get our computer booted up and load a program or two, all on a monochrome/green monitor, with a whopping 16k of slug memory!

What is the concept of DDR - 3?

DDR3 (Double Data Rate, 3 channel) is the next generation of SDRAM. It has transfer rates twice as fast as DDR2 at the same clock speed. and the new technology allows for a maximum stick size of 8Gb meaning a maximum module size of 16Gb. It is not compatible with DDR2.

How do you write to your SD card attached to your card readerwriter?

check the properties of the card and check if it is writable/readable.

What is parity checking used for?

Parity checking is used as a way to ensure data integrity and prevent errors, or detect them in the event they are occuring.

Is BitDefender a Memory-Hog?

Answer

Memory hog is a subjective term because what is memory intensive to me is not necessarily memory intensive to you. However, a number of users report major changes in system performance after installing BitDefender. If you are also seeing your computer slowing down then uninstall BitDefender and install another anti-malware program. I recommend Avast Free Antivirus. It is important to note your computer slowing down can be due to a number of issues not related to BitDefender.

How about ddr2 ramm for laptops into the old slots for ddr theya re both 200 pin so they should fit but would they work?

The DDR2 chips will not work in older DDR slots. Different power requirements, different notch placement.

What is CPU alu and mu cu?

First of all CPU Is a term used to describe Central Processing Unit and that is also known as the Processor. Alu - Arithmetic Logic Unit is the same as Maths Calculation except it is related for the Computer term as to how the processor works. i will write about it more later on today enough for now. First of all CPU Is a term used to describe Central Processing Unit and that is also known as the Processor. Alu - Arithmetic Logic Unit is the same as Maths Calculation except it is related for the Computer term as to how the processor works. i will write about it more later on today enough for now.

How do you upgrade the RAM from 64MB to 512MB in an old Compaq Presario desktop computer?

Upgrading computer RAMIt depends on exactly what model it is (and there are a lot of Presario models -- see http://www.archmemory.com/index.asp?PageAction=VIEWCATS&Category=26215).

If you find your model listed there, click the link and you will see what the maximum amount of RAM your machine will support, and how many memory slots you have. If your computer only has two slots, then you'll need to pull out the existing RAM and insert two 256MB modules in their place.

Assuming that you have the proper amount of compatible RAM, the actual steps are:

1) Turn off and unplug your computer. Remove any external devices if necessary.

2) Open it up (this may require a screwdriver).

3) Unclip and pop out the existing RAM modules.

4) Carefully insert and secure the new RAM (this step can require a surprising amount of force, but make sure that the modules are aligned properly).

5) Close it up, plug it in, reattach whatever else you may have removed.

6) Turn it on and check to see that your new RAM is being recognized. (If your computer fails to boot, odds are good that it's not. Power down, unplug, and recheck that the RAM is properly seated. If you're sure that it is and the computer still doesn't boot properly, then your new RAM is--for any one of myriad possible reasons--incompatible with your computer. Or it could just be "bad" RAM, but verify compatibility before jumping to this conclusion.)

Why is a byte the smallest bit of useful data?

Bit (b) and Byte (B) is entirely different. Bit is the smallest storage unit in computer science.

8 Bit (8b) = 1 Byte (1B)

In normal working, when you press any key, it covers atleast 1 Byte of space. Means if you will type ABC, it will cover 3B, so that we consider byte as a smallest unit of useful data.