1) Please send the data in slot number.

10011101100001001111101100101

2)Ok, here it comes.

01001100

CPU

RAM

Consists one or more chips on the motherboard.

Data and instructions are stored to execute.

Primary storage device.

ROM (nonvolatile)

Motherboard

CPU

RAM

(vola

tile

)

MEMORY (RAM)

HARD DISK

COMPACT DISK

FLOPPY DISK

TAPE

Mor

e ex

pens

ive

Cost

Less

ex

pen

sive

Faster Speed

Slow

er

Temporary Memory (RAM)

Permanent Memory (ROM)

Chips on a small circuit board

Entire memory directly accessible

Program load in RAM before execution

Volatile memory

Play important role in processing speed

Bigger RAM = Large capacity to save data

Smallest RAM = Low capacity to save data

Measured in Bytes

Change data during execution

Lose its contents when computer is turned off

Characteristics:

DRAM (Dynamic RAM)

SRAM (Static RAM)

CPUCACHE

MEMORY

MAIN

MEMORY

SRAMSRAM DRAMDRAM

1.1. It is faster It is faster 1.1. It is slower It is slower

2.2. It is more It is more expensiveexpensive

2.2. it is less it is less expensiveexpensive

3.3. It utilizes more It utilizes more powerpower

3.3. It utilizes low It utilizes low powerpower

4.4. It is more It is more complex & less complex & less compactcompact

4.4. It is less It is less complex & complex & more compactmore compact

Non-volatile

Portable device

Intelligent device

A camera with a flesh card, picture

stored on a card by turning millions of switches on

& off

Faster port

Also called Pen device

Computer have one or two USB port

Multiple devices attached to USB through daisy chain

Alternate to daisy chain USB hub

Original hub port could transfer data at only 12Mbps

USB PORTCONNECT WITH

Printer, Scanner, Keyboard, H.D.D

FLASH FLASH MEMORYMEMORY

USBUSB

1.1. PortablePortable 1.1. PortablePortable

2.2. Have Have switchesswitches

2.2. No switchesNo switches

3.3. Large sizeLarge size 3.3. Small sizeSmall size

4.4. Intelligent Intelligent devicedevice

4.4. Non Non intelligent intelligent devicedevice

5.5. Accept Accept binary nobinary no

5.5. Not accept Not accept binary nobinary no

Small set of instructions

Non-volatile

instructions in ROM prepare computer for use

Do not change data during execution

Store data & instructions permanently

Does not lose its contents when

computer is turned off

Only read & use data

Characteristics:

PROM ( Programmable ROM )

EPROM ( Erasable PROM )

EEPROM ( Electrically EPROM )

PROMPROM EPROMEPROM

1.1. Programmable Programmable memorymemory

1.1. Electronically Electronically programmable programmable memory memory

2.2. user can write user can write instructions instructions only onceonly once

2.2. User can write User can write instructions instructions many times many times

3.3. It provides It provides less usability less usability as instruction as instruction are written are written only once only once

3.3. It provides It provides more usability more usability as instruction as instruction are written are written many timemany time

RAMRAM ROMROM

1.1. Temporary Temporary memorymemory

1.1. Permanent Permanent memorymemory

2.2. RAM enables data RAM enables data read & write to read & write to memorymemory

2.2. Instructions Instructions written in ROM written in ROM can only be read can only be read

3.3. Data can be Data can be changed or changed or deleteddeleted

3.3. Data cannot be Data cannot be changed or changed or deleteddeleted

4.4. Instructions are Instructions are written into the written into the RAM at the time RAM at the time of executionof execution

4.4. Instructions are Instructions are written into ROM written into ROM at manufacturing at manufacturing time time

HAVE YOU ANY QUESTIONS ABOUT MEMORY?