1

ITGS - introduction

System unit + Peripherals = PC

System unit (CPU, memory, …)

Peripherals (mouse, keyboard,…)

PC main purpose: to communicate with you

2

ITGS - introduction

Every PC is built around a tiny microprocessor.

System unit:

•CPU central processor unit (microprocessor)

•Memory

•Internal & external drivers

PC : System unit

3

ITGS - introduction

Five common peripherals:

•keyboard

•mouse

•monitor display

•speakers

•printer

PC: Common peripherals

4

ITGS - introduction

Key (s)

Delete vs Backspace

Function key

Ctrl (control) ex. Ctrl + S, Ctrl + O

Alt (alter)

Enter

PC: Keyboard

5

ITGS - introduction

Social & Ethical issues PrivacyE-mail (see your mail)Password (another person)Pin (mobile phone)Pin (credit card)

PC: Keyboard

6

ITGS - introduction

Social & Ethical issues IntegrityE-mail (hacker see your mail)Password (hacker use your user account)

PC: Keyboard

7

ITGS - introduction

Buttons

Click

Double click

Double click

Ctrl+Drag and drop (copy)

PC: Mouse

8

ITGS - introduction

SYSTEM SOFTWARE

Operating systems OS

APPLICATION PROGRAMS-APPLICATIONS

USER SOFTWARE

Software

9

ITGS - introduction

Match

• APPLICATIONS

• DOCUMENT

with

FILE

what kind of files

Software

10

ITGS - introduction

SYSTEM SOFTWARE

Operating systems OS

APPLICATION PROGRAMS-APPLICATIONS

FILES

DOCUMENT

Software

11

ITGS - introduction

NAME

SIZE

DATE & TIME modified

EXTENSION type

executable files

data files

CONTENT

File

12

ITGS - introduction

Match

• APPLICATIONS

• DOCUMENT

with

i. OBJECT

ii. SUBJECT

File

13

ITGS - introductionFile

Match• APPLICATIONS• DOCUMENT

with

i. NAME

ii. EXTENSION - type

iii. SIZE

iv. DATE & TIME – modified

v. content

explain

14

ITGS - introductionFile

Match• WINDOWS EXPLORER

with

i. NAME

ii. EXTENSION type

iii. SIZE

iv. DATE & TIME modified

v. content

explain

15

ITGS - introduction

Social & Ethical issues IntegrityContent (hacker change document or use document)Name (hacker change name)Size (hacker change document)

File

16

ITGS - introduction

Do all keys always respond by displaying characters on the screen: Yes (which) No (why)

PC : FAQ

17

ITGS - introduction

Does all PC use the same OS: Yes (which) No (why)

PC : FAQ

18

ITGS - introduction

Does Application Program called simply: Application Program Both

PC : FAQ

19

ITGS - introduction

Does System Software include Operating systems OS: Yes No

PC : FAQ

20

ITGS - introduction

Application files and document files are the same kind of files: Yes No

PC : FAQ