1 itgs - introduction system unit + peripherals = pc system unit (cpu, memory, …) peripherals...
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ITGS - introduction
System unit + Peripherals = PC
System unit (CPU, memory, …)
Peripherals (mouse, keyboard,…)
PC main purpose: to communicate with you
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ITGS - introduction
Every PC is built around a tiny microprocessor.
System unit:
•CPU central processor unit (microprocessor)
•Memory
•Internal & external drivers
PC : System unit
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ITGS - introduction
Five common peripherals:
•keyboard
•mouse
•monitor display
•speakers
•printer
PC: Common peripherals
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ITGS - introduction
Key (s)
Delete vs Backspace
Function key
Ctrl (control) ex. Ctrl + S, Ctrl + O
Alt (alter)
Enter
PC: Keyboard
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ITGS - introduction
Social & Ethical issues PrivacyE-mail (see your mail)Password (another person)Pin (mobile phone)Pin (credit card)
PC: Keyboard
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ITGS - introduction
Social & Ethical issues IntegrityE-mail (hacker see your mail)Password (hacker use your user account)
PC: Keyboard
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ITGS - introduction
Buttons
Click
Double click
Double click
Ctrl+Drag and drop (copy)
PC: Mouse
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ITGS - introduction
SYSTEM SOFTWARE
Operating systems OS
APPLICATION PROGRAMS-APPLICATIONS
USER SOFTWARE
Software
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ITGS - introduction
Match
• APPLICATIONS
• DOCUMENT
with
FILE
what kind of files
Software
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ITGS - introduction
SYSTEM SOFTWARE
Operating systems OS
APPLICATION PROGRAMS-APPLICATIONS
FILES
DOCUMENT
Software
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ITGS - introduction
NAME
SIZE
DATE & TIME modified
EXTENSION type
executable files
data files
CONTENT
File
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ITGS - introduction
Match
• APPLICATIONS
• DOCUMENT
with
i. OBJECT
ii. SUBJECT
File
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ITGS - introductionFile
Match• APPLICATIONS• DOCUMENT
with
i. NAME
ii. EXTENSION - type
iii. SIZE
iv. DATE & TIME – modified
v. content
explain
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ITGS - introductionFile
Match• WINDOWS EXPLORER
with
i. NAME
ii. EXTENSION type
iii. SIZE
iv. DATE & TIME modified
v. content
explain
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ITGS - introduction
Social & Ethical issues IntegrityContent (hacker change document or use document)Name (hacker change name)Size (hacker change document)
File
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ITGS - introduction
Do all keys always respond by displaying characters on the screen: Yes (which) No (why)
PC : FAQ
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ITGS - introduction
Does all PC use the same OS: Yes (which) No (why)
PC : FAQ
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ITGS - introduction
Does Application Program called simply: Application Program Both
PC : FAQ
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ITGS - introduction
Does System Software include Operating systems OS: Yes No
PC : FAQ
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ITGS - introduction
Application files and document files are the same kind of files: Yes No
PC : FAQ