Random access memory (RAM) is a form of volatile computer memory that allows for quick reading and writing of data. RAM was invented in 1947 using Williams tubes, then improved with magnetic core memory in the 1940s-1970s. Dynamic RAM (DRAM) stores each bit in a separate capacitor and needs periodic refreshing, while static RAM (SRAM) retains data without refreshing and is used for computer caches. Both DRAM and SRAM are now integrated circuits with DRAM primarily in personal computers and SRAM in computer caches.

1. By: ANIL POUDYAL

2. Introduction
 Form of computer data storage
 Allows to read or write the data
 Nowadays in the form of integrated circuits
 Volatile memory

3. History
 Was invented in around 1947 (Williams Tube)
 Magnetic-core memory was invented in 1947 and
developed until mid-1970s
 Integrated circuit RAM came into the market in early
1970s, with the first commercially DRAM

4. DRAM
RAM
SRAM

5. Dynamic random-access memory
(DRAM)
 Stores each bit in a separate capacitor within a IC
 The capacitor can be either charged or discharged (0 &1)
 Unless the capacitor charge is refreshed periodically the
information fades away due to leakage of charge

6. Static random-access memory
(SRAM)
 Type of semiconductor memory
 It doesn’t need a periodical refreshment
 Uses bandwidth or low power or both
 Easier to control

7. Uses
DRAM SRAM
Basically used in personal
computers, work stations
and severs
It is used for computer’s
cache parts.