RAM-memory and the principle of its operation

Today we'll talk about what RAM is. Let's start with theory. Any computer program run for execution both in the operating system environment and directly in the machine codes is a certain coded set of logical units and zeros - descriptions of the state of transistors.

During operation, data streams are generated, which are operated by the central processor. If the programs themselves are stored on hard disks, CDs and flash drives, that is, on all those media whose data does not disappear after the power supply is cut off, RAM memory is a special memory device, completely dependent on the power supply on its logical circuits. The abbreviation (RAM) itself is a derivative of three English words - Random Access Memory, which can be translated as a random access memory. In Russian, the term "RAM" is more commonly known as random access memory. Both terms describe quite precisely what RAM is.

General principle of work

RAM-memory installed in the computer, it is very simple to learn: it is a set of chips soldered to the base - a small textolite shawl with two rows of copper sliding contacts, through which it connects to the connector of the motherboard. Sometimes such handkerchiefs are called slats, or, more precisely, modules. Depending on the number of connectors, there may be several. The total amount that the connected RAM-memory has is determined by the characteristics of the installed microcircuits. If we talk about the device in a simplified way, then each of them is a set of transistors - electronic semiconductor keys. The peculiarity of this element is that with the help of a simple logic circuit one can control its state: to make it conductive current (open) or not (closed).

Thus, by a simple encoding, it is possible to perform the conversion to binary digits. For example, an open state is a unit, and a closed state is a zero. After switching, a small blocking voltage is required to support the selected state. That's why when you turn off the power, all data stored in RAM is irretrievably lost, as the transistors return to neutral position. The only exception is a flash drive, where the RAM memory is arranged differently, since modified transistors with a floating gate are used. But this is a completely different story.

Let's imagine that a running program needs to store (remember) a number. The processor converts it into a corresponding set of bits and sends them to the controller, which changes the state of the required number of transistors in the RAM chips. After that, the number will be stored there until the blocking voltage (power off) stops or the erase command is generated.

Value for the computing system

RAM is an indispensable component of the computer. Without it, work is impossible. In addition, the speed of the system depends to a great extent on its volume and characteristics. This is quite natural: any program writes to memory cells not one number (as in the example above), but a lot. Therefore, there may be a situation where there are no free transistors. In this case, unnecessary data is discarded on the hard disk, or some of the running applications are forced to close. All this takes time. Not surprisingly, the memory for games - these most demanding programs, should be the appropriate volume (the more, the better). Otherwise, in the game process, there will be delays, jerks.