What is the Full form of RAM?
The full form of RAM is Random Access Memory. To write & read into storage, RAM has been used. RAM preserves files & programme data that the CPU is running. As data is lost when power is switched off, it is a volatile memory. RAM can be further subdivided into two categories
- SRAM (Static RAM)
- DRAM (Dynamic RAM)
A brief history of RAM
- The Williams tube was used in 1947 to produce the first type of RAM.
- The CRT (Cathode Ray Tube) was used and information was stored on the face of the tube in the form of electrical charge spots.
- Magnetic-core memory has been used as a second commonly used type of RAM afterwards in the same year, 1947.
- Many patents were on the title of Frederick Viehe, who was responsible with much of the development work.
- For dealing with Magnetic-core memory, small metal rings & wires connecting to every ring have been used. One bit of data has been preserved in every one of those rings and that data can be retrieved at any moment.
- However, in 1968, Robert Dennard initially discovered RAM, that is now known as solid-state memory. Transistors have been used to preserve bits of information in DRAMs.
Benefits of RAM
- RAM does not include a mechanical moving component, so no noise is generated.
- RAM requires far less power than a mechanical disc drive. It lowers emissions of CO2 and prolongs battery life.
- RAM is considered to be the quickest medium of storage.
Limitations of RAM
- Unless there is a power recovery system like a laptop battery, the power outage can induce irrecoverable loss of data.
- The price of RAM per bit is huge, so devices don’t include much of it.