History of the Computer - Memory Error Correction Codes Part 1 of 2 by Tony Stockill
We have mentioned before, in the history of the computer series, that various forms of error correction are used, in cases where the medium is unreliable. This applies mainly to magnetic tape and disks. The magnetic coating on the recording surfaces is subject to wear, various codes such as CRC... These check bits are inserted in the word written to memory in the appropriate bit positions. ... Now we can check the data read out of memory to see if the total number of bits is odd or even. ... Multiple bit errors caused a recovery process to be initiated, causing lost time, a situation...

Notebook Computer Memory - Upgrading Your Laptop by Charlie Cory
With the proliferation of laptop computers, choosing to upgrade or implement notebook computer memory is not as straight forward as it may seem at first. There is a variety of different types of memory, and it is important that you choose memory that is compatible with your notebook computer. ... In fact, you can do this to check the exact type of memory that your Notebook currently uses, because it is usually shown on the front of the memory strips and should be visible when you open up the memory panel.

History of the Computer - Memory Error Correction Codes Part 2 of 2 by Tony Stockill
32 bit or 64 bit words are common, but for illustration purposes, we will use our 7 bit word from the example above, without the parity bit. We need to calculate the extra parity bits to write into memory along with the data bits, at the appropriate bit positions. ... When we need to read the data from memory we can check the bit pattern to see if we have a problem. ... This word, which has grown from 7 bits to 12 bits can now be written to memory. ... This system detects errors in the check bits, as well as the data bits!

History of the Computer - Core Memory Part 1 of 3 by Tony Stockill
We have made reference to computer memory several times in this series, history of the computer, now it is time to look at how it has developed, and is still developing. A look at a block diagram of a modern PC will show how the memory is central to the way a computer operates. ... The invention of the core memory inthe late 1940s really made the computer a practical, general purpose, commercial reality. ... By this we imply a very large capacity in comparison to the 'core' memory, which is the basis of the computer.

How to Install Computer Memory by Michael Russell
To install memory in your computer, you are going to need a screwdriver. Check the back of your computer to see what kind you will need. If your computer is still on, you will need to turn it off before you even start. Take anything that you may have hooked up to the computer out from its... You will see memory already installed in your computer and also free slots for more memory. ... To test your memory once you have your computer running, try using a game that normally slows down the computer.

Things You Can Do To Speed Up Your Computer by Jason Barrett
Upgrading your processor will always speed up your computer, but sometimes this will not be the best thing to do. The first thing you need to do is find out where the bottle neck is in your system. The first step you would take to finding this out is by using the computers task manager. ... But you might not need to upgrade your processor as the problem could be the memory, check below. ... If the system runs out of memory it will start to use hard-disk space as memory. ... -Stop programs from auto starting when your computer starts, these programs will take up a bit of your memory.

Computer Memory - What To Buy? by Michael Russell
In this article we're going to discuss, first off, how to determine what kind of memory your computer uses and how to decide what to buy to fit your needs. Unfortunately, not all computer memory is alike and the make of your motherboard will determine what memory you will need to get if you want... So, if you put in a memory chip of a higher speed, your computer will only run it at the maximum speed the system is capable of and buying a faster speed chip is just wasting your money. ... Aside from amount of memory, you also have to buy memory that matches the speed of your system.

History of the Computer - the Bootstrap by Tony Stockill
In previous articles in the History of the Computer series we discussed machine codes, programs, and memories. We also mentioned that many types of memory are volatile, that is, if we remove power, the memory loses it's data. So how did the data in your computer right now get there? ... Having set up all the necessary buffers, the computer reads and executes the instructions from 00 onwards. ... On a mainframe computer there is an operating system, which acts as an interface between the machine and the user.

Take Computer to a Trained Professional For Computer Repair by James Hunt
Computers are expensive devices that are changing every day. Computer specialists are working very hard to come up with new computer programs all the time. This means that you need to keep on top of things as well. Sometimes computer’s break down and need to be fixed. ... To fix the problem you simply need to check your memory on your computer, and do a update and disk cleanup on your computer. ... If you turn your computer on and it freezes then you this means that you don’t have enough memory on the computer for what you have on it.

How to Buy Computer Memory by Gary Hendricks
How do you know when to buy more memory for your computer? Or how much memory you'll need? If you can afford it, you should always buy as much memory as you can, since it boosts system performance. But not all of us need 1 GB of RAM - most home users need only about 512 MB of RAM. ... When to Buy More Memory Thinking back on my experience with building computers, there are usually five scenarios under which you'd buy memory for your computer: When upgrading your operating system When installing new applications When installing multimedia cards When adding computer peripherals When...