INFORMATION COMUNICATION TECHNOLOGY SKS 1362 Lecture … Two ICT2.pdf · 10/03/2015 © Dr. Qais...

Lecture Two

INFORMATION

COMUNICATION

TECHNOLOGY

SKS 1362

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Microprocessor

CPU: Central Processing Unit

Brain of the computer

Executes instructions

© Dr. Qais Faryadi 2015: SKS 1362

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Microprocessor CPU:

It has mathematical

function

Calculates instruction

Pre-loaded information


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Microprocessor CPU:

Gets instruction from user

Interprets instruction

Needs storage

Writes data

Saves data for later use


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What is Motherboard?


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What Is Inside Motherboard?

CPU, Bios, Memory,

Mass Storage, Ports, Slots,

Controllers, screen, Bus,

keyboard,

disk drives


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You can add memory on the

motherboard

You also able to upgrade it

Change the CPU

Or if you have money can replace

your motherboard for new one.


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What is Memory?


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Types of Memory

Memory is an internal storage in

the computer

It is either temporary or

permanent

It’s job is to store data or

instructions


Types of Memory

Four basic types of memory:

RAM

Cache Memory

Virtual Memory

Hard Drives


Types of Memory

RAM

Random Access Memory

It is temporary

It is used when needed

Off your computer lost


Types of Memory

Cache Memory

Used between CPU and RAM

Holds most recent information

Holds Temporarily


Types of Memory

Virtual Memory

File is too big for RAM

Hard drive keep it for a while

Use it when needed

It is a slow process


Types of Memory

Hard Drives

Can store information

permanently

All programs and files are

stored


Types of Memory

Read Only Memory (ROM)

All the time active

Cannot sleep

Switch off no problem

You On your computer information

still ada. Content cannot change (read

only)


Computer:

What is Input

Devices?


Input Devices User enters DATA and gives COMMANDS

How? keyboard, mouse, camera, microphone

Four forms of input:

Data

Program

Commands

User responses


Convey information to one or more

users.

Four types of output:

Text

Graphics

Sound

Video

Animation

Output Devices


What is Output

Devices?


21

COMPUTER

1. Input: Accepts data

2. Takes the data and

process

3. Produce results 4. Store the result

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7. What is Storage

Devices?


Storage Devices


Definition:

Storage device means

something capable of keeping

and saving our data

It is used in the computer

Many types of devices

Hardware device


Many types of devices: Floppy discs

Fixed hard discs

Portable hard discs

Magnetic tapes

CD, DVD

Pen drive, Memory card


Communication

device is any device that can be

used to convey message within

computer and

from computer

to the user.


8. Types of communication

Router

Modem

Bluetooth

Ethernet Port

Telephone Port

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Discussion

How Computer Works?


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Elements of Information System 1. People 2. Procedure 3. Software 4. Hardware 5. Data


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Computer Application In Society….. 1) Science 2) Medical 3) Education 4) Business 5) Entertainment 6) E-banking 7) Crime prevention



Data Representation

Representation of information

Stored in a computer.

Types of information such as:

1) Numbers

2) Text

3) Graphics

4) Stills video

5) animation and sound

Expansion Slots

Slot for adding capabilities such as

Memory

Graphics

Devices

Sound Cards



Adapter Cards

Allow a computer to

support a new device.

Enable a computer to

communicate.

It is also called

controller.

http://dictionary.reference.com/browse/controller card


Ports and Connectors

There are many connectors

and ports on the computer.

They communicate with

the different devices

attached.



A PORT is an interface

between the computer and

other computers.

A port is a specialized outlet

on a piece of equipment.

A Cable or a plug connected

to the computer.



IEEE 1394 interface

Parallel

Ethernet

USB

USB



Minijack

VGA (Video Graphics Array)


Computer Bus!!!

Bus Stop?


Computer Bus!!!

Bus Stop?

Flow of data from one component to another.

Communication with

the Brain of Computer.

A bus is a collection of wires

and connectors through which

the data is transmitted.


Computer Bus!!!

Bus Stop?

The data bus:

transfers actual data

The address bus:

transfers information about the data and

where

it should go


Computer Bus!!!

Bus Stop?

The size of a bus, known as its

width, is important because

it determines

how much data can

be transmitted

at one time.


For example,

A 32 bit bus has 32 wires or

connectors

A 16 bit bus has 16 wires or

connectors

can transmit

16 bits of data


Computer Bays

Expansion bays and expansion

slots are two components of a

computer.

While both slots are used to

expand

your computer capability.


Computer Bays

Expansion bays, or drive

bays, hold hard disks,

floppy drives

and CD drives


Computer Bays

Expansion slots hold

expansions for graphics,

sound

and

connectivity.


Computer Bays

Called drive bays, it is a spaces within

your computer.

To install drives.

This is where the computer's hard disk,

CD-ROM

or DVD drive and floppy drive are

stored.


Power Supply

A power supply

unit converts

electric to

low-voltage

suitable to

computer.

(65-250watts)

INFORMATION COMUNICATION TECHNOLOGY SKS 1362 Lecture … Two ICT2.pdf · 10/03/2015 © Dr. Qais...

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