This document discusses RAM and ROM chips. It provides a brief history of RAM invention by Robert Dennard and others in the 1960s-1970s. It defines RAM as random access memory that allows data to be accessed randomly and is volatile, while ROM is read-only memory used for boot instructions and is non-volatile. The key difference is that RAM contents are lost when powered off, while ROM retains data. Advantages of RAM are silent and power-efficient operation, while disadvantages are volatility and limited space.

1. RAM
&
ROM
Chips

2. 
BY: Adeel Rasheed

3. 
Short History.
Definitions of RAM & ROM.
Difference Between RAM & ROM.
Working / Logic Gates / Design.
Advantages & Disadvantages.
Contents

4.  Robert Dennard:
Robert Dennard was the inventor of ram: random
access memory, the device was patented in 1968 by
Dennard.
 Jay Forrester
 An Wang
 Kenneth Olsen
 invented in 1956,
 1965 Sylvania
 1970s Fairchild, Intel, Motorola
History
Intel's 1103 was the
world's first available
dynamic RAM chip

5.  Random Access Memory or RAM is a form
of data storage that can be accessed
randomly at any time in any order and from
any physical location allowing quick access
and manipulation.
Read-only memory or ROM is also a form
of data storage that can not be easily altered
or reprogrammed. Stores instructions that
are not necessary for re-booting up to make
the computer operate when it is switched
off. They are hardwired.
Definitions

6. 
Difference
 RAM is volatile i.e. its
contents are lost when
the device is powered
off.
 The two main types of
RAM are static RAM
and dynamic RAM.
 It is non-volatile i.e. its
contents are retained
even when the device
is powered off.
 For Boot your PC
 The types of ROM
include PROM,
EPROM and EEPROM.

7. 
RAM Working/Gates

10. 
ROM Working/Gates

13. Silent: since there are no moving parts
RAM operation is completely silent.
Power-efficient: for the same reasons, RAM
uses much less power than disk drives.
 Reduce your CO2 emissions and extend
your battery life.
Advantages

14. 
Volatile: a power outage will cause
irrecoverable data loss, unless there is some
power backup system like a laptop battery.
Space-limited: RAM cost per bit is high, so
computers don’t include too much of it.
Disadvantages