What is needed RAM-memory computer. Brief on standards
Any computer consists of components, and each component performs some function. So, a hard disk is needed to store files; the video card forms the image that displays the monitor display; The processor performs mathematical operations, but the RAM memory is needed to save intermediate results. Each of these nodes, in fact, is indispensable.
What is RAM memory
One of the most important elements of any computing system is the RAM modules. Sometimes they are called simply - RAM. This abbreviation comes from the first letters of the English words Random Access Memory, which can be translated as “Random Access Memory to any block of yours” or, more simply, RAM (random access memory).Physically, these are small PCB slats on which conductive paths are divorced and chips with sets of transistors - memory cells soldered, and on one of the sides there is a two-sided comb of sliding contacts,allows you to connect modules to the corresponding connectors of the motherboard.
RAM memory is used to store the data needed by all computer systems. The key feature to remember is that after a reset or shutdown, all stored information from the cells is erased. Talking about what is RAM-memory, it makes sense to draw an analogy with the human mind. For example, it is necessary to perform the addition of two numbers. A person keeps in memory one number and, mentally substituting the second, performs a mathematical operation.The “sheet” on which the recording and calculation are performed is precisely the equivalent of the computer’s RAM. The next day, the result can no longer be remembered. Of course, this is a very simplified model, but it is enough for understanding.
In computing systems, the processor selects data from the RAM stored by applications there, and also sends processing results there, later “picked up” by programs. That is why the term “operational” is used, that is, necessary for current operations.
Types of computer storage devices
Note that there is a permanent memory - these are ROM chips, the transistors of which are able to stay in a certain state in the absence of voltage. Such chips are installed, for example, in hard drives, routers, monitors (saving settings) and other devices where firmware reset is not allowed.
Sometimes the term "permanent memory" is used in relation to drives, but this is not entirely correct. This is easily seen by asking the consultants of an electronics store not a hard disk, but a permanent storage device.
There is another modification of storage solutions, representing a hybrid of RAM and ROM. Thus, the user settings of the BIOS of the motherboard are stored in the chip, the transistors of which are supported by an insignificant current received from the rechargeable “battery-tablet”. This idea has found a "second life" in special drives, data carriers in which are ordinary memory modules supported by the battery.
There are several modifications of the "RAM". The 386/486 / Pentium systems used strips designed in accordance with the SIMM standard and DIMM SDRAM.The frequency of the chips and tires ranged from 66 to 133 megahertz, the bit width was 64 bits (against 32 for the SIMM). With an increase in the performance of central processors and video cards, it was necessary to speed up the operation of RAM, so data began to be transmitted through the decline and rise of the reference frequency, in fact, doubling the throughput (DDR). Such strips use a voltage of 2.5 volts and are now used only in specialized devices. A newer version of DDR2 works at 1.8 V and allows you to skip more data per unit of time than the previous standard. Tentatively, we can assume that the high-speed version of DDR barely falls short of the “normal” of the updated version.
And finally, the most common standard now DDR3 is able to transmit 4 data packets during each period of the reference frequency, which leads to an increase in throughput. However, additional delays were introduced for stability. The power supply to the modules is 1.5 V. In general, the use of DDR3 in conjunction with modern processors allows more to achieve a higher system speed.
Problems and Solutions
Very often in the configuration list you can find the following information: "RAM - 4 GB." This means that one or more RAM modules with a total volume of four gigabytes are connected to the motherboard. Is it a lot or a little for such an element as RAM? 4 GB is still quite enough to solve any problems, at least for the average user. On the other hand, this is the necessary minimum, without which the normal operation of Windows Vista 10 operating systems is impossible.
An attempt to use new systems with insufficient RAM may lead to the appearance of a message that there is not enough RAM. Fortunately, this problem is easily solved. There is nothing complicated about how to increase RAM memory. To do this, determine how many slats are installed. It may be one for 4 GB, and maybe several, but with a smaller volume. Depending on this, you have to decide whether to add or completely change the RAM. Next, you need to determine how many free memory slots are on the board. It is best to look "live" by removing the case cover. It will remain either to add another lath, or to change the existing one to a more capacious model.It is important to consider the standard of the installed RAM (DDR 1-3).