Chapter 3 : Memory and processors

To store data

To execute instructions

To manage memory

To connect peripherals

RAM is non-volatile, ROM is volatile

RAM is read-only, ROM is read-write

RAM is volatile, ROM is non-volatile

RAM is slower than ROM

where information is stored

is the working memory of a computer

the backbone of the computer

what executes the commands from the hardware or software

A large male goat

A big Dodge truck

Random Access Memory (working memory)

Sticks of goodness

Volatile memory is faster than non-volatile memory

Volatile memory loses its data when power is turned off

Non-volatile memory is used only in mobile devices

Non-volatile memory is more expensive than volatile memory

It allows more programs to run simultaneously

It decreases the need for virtual memory

It has no effect on performance

It increases the speed of the processor

EPROM

EEPROM

Flash Memory

Firmware

RROM, ERPOM,EEPROMM

PROM, EPROM, EEPROM

MORP, EEMORP, EPOM

POMM, ERMP, EERMP

PROM

EPROM

EEPROM

Digital cameras

Washing machines

Remote controls

Calculators

Digital clocks

Smart TVs

Printers

Mobile phones

It is volatile and has moving parts

It is non-volatile and has no moving parts

It is only used in SSDs

It requires high power consumption

They are cheaper to produce

They save energy and produce less heat

They require more cooling

They are faster in all tasks

Hertz, Kilohertz, Megahertz, Gigahertz

Seconds, Minutes, Hours, Days

Bytes, Kilobytes, Megabytes, Gigabytes

Watts, Amperes, Volts, Ohms

Decreases overall performance

No change in performance

Increases potential for multitasking and parallel processing

Reduces the cache size

To store data permanently

To increase processing speed

To allow multiple programs to run simultaneously

To provide backup storage