ROM stands for non-volatile memory in computers. The memory does not depend on an electric current to save data, instead, data is written to individual cells using binary code. Non-volatile memory is used for parts of the computer that do not change, such as the initial boot-up portion of the software, or the firmware instructions that make your printer run.
Turning off the computer does not have any effect on ROM. Non-volatile memory cannot be changed by users. All rights reserved. Neither Crucial nor Micron Technology, Inc. Micron, the Micron logo, Crucial, and the Crucial logo are trademarks or registered trademarks of Micron Technology, Inc.
All other trademarks and service marks are the property of their respective owners. Find a product Part no. Your search did not match any active Crucial part numbers or configuration IDs. Find articles and site content Enter keywords. The information a ROM holds can both be referred to as permanent or semi-permanent this is because a special operation may be required before the information stored in it can be modified.
This is why it is possible for a computer system to go off and all the important information would still remain intact, unlike in a RAM where all operations done while a computer is going off will be immediately lost. The ROM chip is therefore the most common memory chip because most electronic gadgets used for everyday activity perform repetitive tasks and do not require a constant change of programming aside from the one that has been built in by the manufacturer.
The program files responsible for the operation are usually stored in a ROM Chip. A few examples of ROM chip-controlled devices that are used daily include printers, televisions, calculators, electric bells, game consoles, etc.
Now that you know the difference between the RAM and ROM and you can identify the several types that are available, you will now learn how to identify it anytime you come across one. To see a ROM, the computer device has to be dismantled as it is usually attached to the motherboard. The process of dismantling a computer motherboard is quite different from computer to computer. For a desktop device, the board can be found after dismantling the CPU case while in a laptop, the motherboard will be found after dismantling the frame of the laptop.
Once you have found the motherboard, you will be able to locate the ROM Chip by careful examination. You must kindly note that there is no particular location on the board where the ROM must be found because this is subject to different variables such as the size of the board and a manufacturer may simply decide to place it anywhere they like.
However, it is very common for manufacturers to install the ROM chip around the south bridge and peripheral card slots. By close examination, the ROM chip can be identified by the text that is printed on it and the connection pins that attach it to the board. Most connection pins on ROM chips are often 28 or 30 in number, although there are a few instances where they are more than that.
The manufacturer is at liberty to determine the number of pins they want to use. There are several small components like the ROM Chip that are products of several years of research and hard work. They are all put together to contribute to the overall working of these wonderful computer gadgets that make our living fun, interesting, and simple. Their operation seems magical, but the science behind their operation may sometime be very simple.
These beautiful gadgets that make our life so fun and easy are empowered to perform their respective tasks due to the information that has been programmed into them by their manufacturers.
The programs are stored on the day the device was manufactured and will keep running until the device is no longer in use. The component where these important programs are stored for the entire lifespan of the device is what we have been discussing — the ROM chip. However, they are different in terms of appearance, function, and operation. Below are the common differences between them, apart from the apparent difference that can be seen in the names:.
The importance of a ROM in the computer cannot be overemphasized as it is the most used storage. Due to recent advancements in computer engineering, several types of ROM have been developed for different purposes. This is the first type of Read-only memory chip to be developed, and most of what has been discussed earlier in this article are peculiar to it. As was discussed earlier, this type of memory can only support the writing of a file only once, and the file can only be read after that.
The downside of this memory is the cost involved in producing them in small quantities. This is because whoever is producing them has to program them from scratch, an activity that could be wasteful in case there is a problem with the program written into it.
Furthermore, most manufacturers do not have the capacity to produce their own ROM and have to outsource the task to a third-party producer.
Therefore, they cannot make modifications to whatever was produced for them. Like any other technology, further research was carried out in order to develop better systems that are a modification to the ROM with the aim of addressing the downsides.
This is the story behind the development of the other types of ROM that are given below.
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