CodeRewind Technology Blog

Upgrading RAM is the easiest of all the hardware upgrades anyone can make on their machine. Before you step ahead an buy or bid for a RAM. Please check few things to see if that RAM is compatible with your system.

Pins - Check the number of Pins (Pins are the contacts on both sides of RAM)

Clock Speed - Check to make sure the speed of your current RAM matches the new one. For some case it might work with a RAM with lower speed but not with a higher speed. This means that PC133 will work at 133Mhz, 100Mhz and 66MHz, or any clocks in between. It also means that PC3200 RAM will work at PC2700, 2100 or even 1600 speeds. But there is no user putting more money to buy a higher clock RAM and use it with a slower one.

Density issue when mixing RAM –Mixing different densities (getting them in the wrong order) can cause problems. The lowest density should be nearest to the chipset, since it is likely to have the most DRAMs on it, and thus be a heavier load on the bus. This can cause problems associated with either of the two mixing problems above, so eliminate those before assuming this. Swapping slots usually solves a problem caused by this.

Continuity RIMMs (incase of RDRAM)
RDRAM systems don’t have a memory “bus” like SDRAM systems do, where modules are connected in parallel, they have a “port” off which hangs a chain. This chain must be continuous from source to termination, since the clock is used twice, once in each direction, and because proper termination is required to avoid reflection. Therefore the empty slots on a motherboard are populated with CRIMMs. They’re like blank modules, with a few surface mount resistors and capacitors in places. They need to be present in every empty RIMM slot for the system to even pass POST.

“Registered memory” is a means of “Buffering” the memory in SDRAM. This means that the clock signal is boosted across the entire array of memory chips so that the computer sees a clean sharp clock signal instead of a weakening clock signal as it progresses along the length of the memory path. Registered memory must be supported by the system board and cannot be mixed with “Unbuffered” modules. You must have only Registered memory to use Registered memory. This is a further means of eliminating the possibility of errors when reading the data in memory and is used when the data returned from memory is extremely critical, such as in scientific or financial calculations where the integrity of the data is CRITICAL. It also allows a module to be built using more chips, allowing for larger capacity modules to be made.

ECC stands for Error Correction Code. It is similar to Parity, but more advanced. It can detect multiple errors in data returned from memory and actually correct a single error. ECC memory has 8 extra bits to support the ECC. The System board to be used must support ECC, and all of the memory in the system must be ECC for it to be actively supported. Your system board specifications will tell you whether or not you can use ECC.

Buffered memory uses a Buffer chip to boost the clock signal sent across the memory module so that the clock signal is seen as a clean, sharp signal across the entire module. It eliminates chances of memory errors in data sent or retrieved from memory. It is commonly used in larger capacity Fast Page Mode or EDO modules. Buffered modules have a different keyway in the contact edge and can only be used when the board supports Buffered modules. Unlike Registered modules, it is not interchangeable with Unbuffered modules.

Can I mix PC -100 and PC-133 memory in the same system?
If the system supports 100MHz memory, you can normally use 133MHz memory in it as well, and can even mix the two. However, there would be no advantage gained as the 133MHz memory will only run at the bus speed of 100MHz. Using the 133MHz memory will not make the system more stable if it is being Over-clocked. We suggest using only the memory specified by the system manufacturer, and cannot guarantee that memory which is different than the manufacturer specifies will be 100% compatible.

– Finally you can visit this site for more information: http://www.crucial.com/store/listmfgr.asp?cat=RAM

The Advent of Digital Hearing Aids

Through the years, the number of people suffering from hearing impairment has been constantly rising. It is estimated that in the United States alone, there are about 28 million Americans who are experiencing mild to severe hearing problems. All around the world, the figure can be of much greater proportions. Thus, there is a need for more hearing device products. Digital hearing aids are making the use and functionality of such gadgets more effective and satisfying.

In this age when everything is turning digital, one really cannot say no to digital technology. One major feature of being digital is the preciseness of operations or functions of the device. Thus, when you use digital cameras, the image produced are superb compared to images taken using common or analog cameras. When radios are digital, expect that the reception and sound quality is also superb.

In digital hearing aids, you could be ensured that the quality of the hearing aid functions would be of significant consideration. Thus, it would be reasonable and logical to infer that digital hearing aids are the much improved modifications of the usual hearing air products in the market today.

Features of digital hearing aids

As mentioned above, there are numerous distinct features found in every digital hearing aid product. On top of this long list would be the presence of very miniscule and tiny computer chips in the devices. These semiconductor components make up for the digital hearing aids’ artificial intelligence.

Artificial intelligence makes digital hearing aids much better than other types of hearing aids. With this feature, the user can find that he would clearly hear the sounds that he wants to hear. This means that other noises and unwanted sounds could greatly be set aside so that the user could only focus on the sound needed to be processed. This feature can also be available in analog hearing aids, but the difference is that the process automatically runs in digital hearing aids unlike in analog models.

Digital hearing aids are also too compressed. There is a saying that in small packages come great things. Digital hearing aids are embodiment of this statement. That is because the tiny structures of such gadgets make up for the compressed design. In turn the hearing aids can be more conveniently worn by the user without any hassle. The small structure also make sure that the features are as great, if not totally better, than the common hearing aid products in the market today.

Microphones and transmitters

Every hearing device is made up two basic components for effective functioning. These components are the microphones and the transmitters. Each of the two is very crucial in ensuring that the function and usability of the gadgets are put in proper place.
Microphones are the components located at the external portion of hearing aids. These components facilitate for the collection of sounds from the surroundings. These microphones are no different from the common microphones you use every day. However, digital hearing aids use very sensitive microphones so that more sound would be clearly and sharply received.

Transmitters are the hearing aid components that facilitate the processing of the collected sounds from the microphones. The hearing aid system works by collecting sounds and then transmitting the sounds through the transmitters so the ear could receive the data. Microphones and transmitters must co-exist for the digital hearing aids to be truly functional. Absence of one would totally impair the hearing aid system process.

Digital hearing aids are the modern gadgets to restore hearing of hearing impaired people. With the advent of such devices, it is not bad experiencing hearing loss nowadays.