Asked By
webexptpro
10 points
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Posted on - 03/06/2012
What is ROM? why it is called read only memory?
What is ROM? why it is called read only memory?
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Hello there
That is actually a good question. A ROM (or as you called it with his full name, Read Only Memory) is different from RAM (Random-Access memory). While RAM saves everything what you do in that moment (for example, typing in Word or Excel, or playing Call of Duty or Modern Warfare online), ROM doesn’t do that. He is too cool for that. ROM saves basic functions of computer, like booting the computer, or restarting the computer, or shutting down the computer. You can’t change how the computer boots, can you? Those are some main process in computer, like breathing for people, and you can’t change that process, just like if you subtract oxygen from people, we would die.
What is ROM? why it is called read only memory?
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ROM stands for Read-Only Memory or read-only memory. It is a set of storage medium used in computers and other electronic devices where it is required. Data stored in ROM cannot be modified or can be modified only slowly or with difficulty, so it is mainly used to distribute firmware [software that is very closely tied to specific hardware and unlikely to need frequent updates].
Every stored-program computer needs some form of non-volatile storage [that is, storage that retains its data when power is removed] to store the initial program that runs when the computer is powered on or otherwise begins execution [a process known as bootstrapping, often abbreviated to booting or booting up]. Likewise, every non-trivial computer needs some form of mutable memory to record changes in its state as it executes.
What is ROM? why it is called read only memory?
ROM or Random Access Memory or a firmware is a cohesive circuit encoded with a certain data when it is produced. This is used for computers and can also be used for other electronic devices. The data from a ROM are prerecorded and when it is written on the chip, you can only read it. It cannot be change or remove.
The five basic types are the ROM, PROM, EPROM, EEPROM and Flash Memory. They are called as ROM for two common reasons. The data stored from them are non-changeable or it needs a unique operation to alter it. Unlike the Random Access Memory or the RAM where the data stored can be changed.
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