RAM and ROM

RAM and ROM

1. RAM- Random Access Memory. This is a hardware device that allows information to be dtored and retrieved on a computer. Operating systems, applications and graphical user interface are all stored in RAM.

2. ROM- Read Only Memory. This is memory that can't be changed by a programme or a user

3. A computer uses 2 types of storage, RAM and ROM. Also there are backing stores for example hard disks and some like CD's and DVD's

4. ROM retains it's memory even after the computer is turned off. ROM stores the instructions for the computer to start up when it is turned back on.

5. A ROM chip is non-volatile storage and does not require a constant source of power to retain information stored on it. In contrast, a RAM chip is volatile and requires a constant source of power to retain information.

6. Volatile memory is computer storage that only maintains its data while the device is powered. Most RAM (random access memory) used for primary storage in personal computers is volatile memory.

7. A dynamic RAM chip holds millions of memory cells, each comprised of a transistor and a capacitor. Each of these cells is capable of holding 1 bit of information, which is read by the computer as either 1 or 0. Static RAM chips, on the other hand, use a different technology. Memory cells flip-flop between 0 and 1 without the use of capacitors, meaning that no refreshing process is needed and access takes place only when the information is required.