Random access memory

1. RANDOM ACCESS MEMORY
By
Praveen
Santhosh
Mahadev
PS Ravindra

2. Random-access memory (RAM)
RAM (Random Access Memory) is the hardware in a computing
device where the operating system (OS), application programs and
data in current use are kept so they can be quickly reached by the
device's processor. RAM is the main memory in a computer.

3. Inventor of RAM
Robert Dennard is the
inventor of RAM, although
it was known as DRAM
when he invented it. DRAM
is an acronym for dynamic
random access memory.
The invention for dynamic RAM came in 1967. The
technology was so innovative and useful that it is still used
as the memory cell in most computers today along with
solid state memory drives.

4. •RAM Faster than secondary storage.
•RAM can capably read and write any type of data.
•RAM consumes less power compared to hard disk, CD, DVD.
•No part of RAM moves when RAM executes an instruction.
•RAM memory increases your computer speed.
•Central Processing Unit (CPU) reads any data faster because
of RAM.
Advantages of Random Access Memory

5. RAM is an expensive memory. It means
costly.
RAM is slower than the CPU cache
memory.
RAM memory has limited space for
storing data.
RAM is volatile memory means, Stored
data in RAM cannot permanent.
Disadvantages of Random Access Memory

6. • Stress-free video editing
• Multitasking
• Game on
• Lightning-fast browsing
• Print effortlessly
Advantages of Random access memory

7. •SRAM (Static random access memory)
•DRAM (Dynamic random access memory)
Types of RAM

8. SDRAM
Static Random Access Memory (Static RAM or SRAM)
is a type of RAM that holds data in a static form, that
is, as long as the memory has power. Unlike dynamic
RAM, it does not need to be refreshed.
The bipolar junction transistor is very fast but
consumes a lot of energy. MOFSET is a popular SRAM
type

9. Diagram of SRAM

10. DRAM
•Dynamic random-access
memory (dynamic
RAM or DRAM) is a type of
random access semiconductor
memory that stores each bit of
data in a memory cell
•usually consisting of a
tiny capacitor and a transistor,
both typically based on metal–
oxide–semiconductor(MOS)
technology.

11. Types of DRAM

12. DDR SDRAM
Double Data Rate Synchronous Dynamic Random-
Access Memory (DDR SDRAM) is a double data
rate (DDR) synchronous dynamic random-access
memory (SDRAM) class of memory integrated
circuits used in computers. DDR SDRAM, also
retroactively called DDR1 SDRAM, has been
superseded by DDR2 SDRAM, DDR3 SDRAM, DDR4
SDRAM and DDR5 SDRAM.
Thus, with a bus frequency of 100 MHz, DDR SDRAM
gives a maximum transfer rate of 1600 MB/s.

13. Types of DDR SDRAM