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ommon Question of Computer
What Is Computer?
Computer িটয ধযণ থ গণক ম। রিটন Compute থক আংযজী Computer য উৎট। Compute িটয থ গণন ফ টফ টনক কয। কটিউযয ম ভূ রতঃ মগ , টফগ , ণ , বগ আতটদ কম ফরী দন কয ম। টক ফত ভন মু গ কটিউযয ফহভু খী ফফযয পর কটিউযয ংঙ নক ফকত রব কযে। কন ীটভত ংঙ টদ অয কটিউযক গডীফ কয ম ন।
Who Is The Inventor Of Computer?
টফটষ টফনী টিট গটণতটফদ চর ফফজ অধু টনক কটিউযয ভূরনীটত টনধ যণ কযন। ফটনক টমু য বফ ফফজয এআ ভূ রনীটত ফফন কয ফ টন। তফু তা য এআ মু গকযী টচবফন এফং চষয জ তা ক অধু টনক কটিউযয জনক ফর । ১৮৮৭ র ডয যভন রটযথ অভটযকয অদভভযীয কজ ত দনয জ চর ফফজয ভূ রনীটত টন গফলন কযন। য ১৯১১ র ’ িট টব কনীয মগীত টতটন কভটউিটং , িফু রিটং যকটড ং কনী টত কযন। ম য টফ টফখত IBM (International Business Machine) -এ টযত ।
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Computer Structure:
Computer ভূ রতঃ টতনিট ং টফব। মভন ঃ
1. Input Device. উদযণঃ কী ফড , ভউ , জটক , টপ ড , সনয আতটদ।
2. Central Processing Unit (CPU)
3. Output Device. উদযণঃ ভটিনয, টিয, টকয টবৃ ত।
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আনু ি
টডবআ
গটনটতক মু ট ং
-----------^-----------
র আউটিন --- >
-----------^-----------
ৃ টত এরক
অিউু ি
টডবআ
কটিউয ভলয ভধ থ কঃDeference Between Computer & Human Being:
কটিউয ভলয ভধ থ ক র কটিউয ম কন কজয পরপর টত ত গটতত দ ন কয। টক ভল ত যন। ত ভল কটিউযয চ ফু টভন। কযন কটিউয ভলয ত গড় একিট আরকটন ম। তয চ ফড় কযণ র কটিউযয টনজ কন ফু ট নআ। ভল মটদ তয ৃ টত ফ ভভযীত িয ি কয দ তর ঐ িযয ম টন অভদয ভন তথ দন কযফ। তয ফী ফ কভ কযফ ন।
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Classification Of Computer:
গঠন উ বদ কটিউযক আ বগ বগ কয ম। মথঃ
Analog Computer
Digital Computer
েএড় উয আ ধযণয কটিউয এয ংটভশন অযকিট কটিউয তযী ে। এয নভ Hybrid Computer|
Note : টডটিজর কটিউযক অফয চয বগ বগ কয । মথঃ
১. য কটিউয
২. ভআনভ কটিউয
৩. টভটনভ কটিউয
৪. ভআ কটিউয ফ , নর কটিউয। টনচ এয ক তু র ধয র।
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Classification Of Digital Computer:
Super Computer.
„ ‟। Cray-1, Cyber-205.
Mainframe Computer.
UNIVAC 1100/11, IBM 6120, NCR N8370, IBM 4341.
Miniframe Computer.
PDP 11, NOV A3, IBM S/34, IBM S/36.
Micro Computer.
, ।
: Apple 64, IBM PC, TRS 80 ।
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Measurement Of Data Of The Computer:
( ) ( ) Bit । Binary Bi Digit
t Bit । 0 1 ।
Bit ।
।
Kilobytes (KB) & Megabytes (MB), Gigabytes (GB), Terabytes (TB)
, ।
।
।
8 Bit= 1 Byte [1 Byte = 1 Character]
1024 Byte = 1 Kilobyte(KB)
1024 Kilobyte = 1 Megabyte (MB)1024 Megabyte = 1 Gigabyte (GB)
1024 Gigabyte = 1 Terabyte (TB)
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Speed of a Computer
Measured by system clock frequency
HzKHz = 1000 HzMHz = 1000,000 Hz
GHz = 1000,000,000 Hz THz = 1000,000,000,000 Hz
MIPS (MILLION INSTRUCTIONS PER
SECOND) is another measurement of cpu speed.
How Many Parts Of A Computer?
There are two parts of a Computert
Hardware:
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, Hardware ।
Computer Hardware
• Case
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Power Supply
• Keyboard
• Power switch
• Mouse
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• Reset switch
• Scanner
• Hard drive
• Network card
• Floppy
• Modem
• CD/DVD
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• Sound card
• Serial ports
• Video card• Parallel port
• RAM
• USB port
• Motherboard
• Monitor
• Fan
• Printer
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• Cables
What is Cabling
For items in or attached to a system to work properly they must be securely connected.
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What is Motherboard
The motherboard's main job is to hold the computer'smicroprocessor chip and let everything else connect to it.Everything that runs the computer or enhances its
performance is either part of the motherboard or plugsinto it via a slot or port
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Software :
।
What Is Memory?
, । ।
. ( memory) RAM, ROM|
. ( memory) , , ।
What Is RAM?
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RAM (Random Access Memory) (Volatile) । Input Device
RAM । ,
। RAM - (
Write Memory)
। RAM ।
।
What Is ROM?
ROM (Read Only Memory) (Non Volatile) । ,
। Computer - । ROM
-
, । , ।
।
What Is Disk?
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Computer Disk ।
Disk ।
1. Floppy Disk
2. Hard Disk.
Disk Compact Disk (CD).
:
Floppy Disk:1.44 Megabyte (MB) [ For 31/2 Floppy Disk ]
Compact Disk:150 Megabyte (MB) 800 Megabyte (MB)
Hard Disk:15 Gigabyte (GB) 800 Gigabyte (GB)
DVD Disk:700 Megabyte (MB) 12 Gigabyte (GB)
What Is Operating System?
Operate ( ) Operating । ।
System ।
Operating System । Operating System
।
Operating System
। Operating
System ।
, ।
Operating System. , , ,
,
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।
What Is Startup Disk?
।
। GUI
Dos ।
What Is Windows?
Windows Microsoft Corporation Operating System.
Windows Operating
System -Gi Application Software । DOS (Disk
Operating System)
-Gi Application Software DOS Command
। DOS
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Command - Microsoft Corporation Windows Operating System
।
Application Software Mouse Keyboard mgš^‡q
।
Various Types Of Windows Operating System‟s Verson:
।
। । Windows 98, Windows 2000, Windows ME.
Windows XP.
Windows NT.
।
। , , , , ।
।
।
।
What is Computer‟s Booting Process?
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। ,
Autoexec.bat, Config.sys
।
How To Start A Computer?
।
Casing Box Power Switch ON ।
Folder/Icon Windows Desktop Screen ।
Introducing on Windows Screen:
Power On Windows
Operating System Screen ।
।
Windows Operating System
।
My Computer My Computer ।
, ।
My Documents My Computer ।
Document ।
Recycle Bin Recycle Bin ।
।
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। । Recycle Bin Empty
। ।
Taskbar Windows ( ) Ber
Windows Task
Bar. । ।
। । ।
Start Button Windows Taskbar “
STARTÓ । Operating
System । ।
Shutdown, Run, Search/Find ।
Programs, Documents, Settings । ।
Using of Start Button:
, ।
।
Opening Calculator: Start > Programs > Accessories > Calculator
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।
।
Opening a word processing program: Start > Programs > Accessories > WordPad
।
।
Open Paint Program: Start > Programs > Accessories > Paint
How To Create A Folder?
Right Button ।
New ।
Folder ।
।
Enter ।
How To Delete A Folder?
Folder ।
Press Delete Key [ ]
Yes ।
Recycle Bin Right Button ।
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Yes ।
How To View File Or Folder?
Folder ।
Right Button ।
Properties ।
General ।
OK।
How To Shut Down A Computer?
Start ।
Shut Down ।
Shut Down Choose ।
OK ।
AT Casing “ It‟s now save to turn off your computer ”
। ।
ATX Casing “ It‟s now save to turn off your computer ”
। ।
।
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How To Restart A Computer?
Start ।
Shut Down ।
Restart Choose ।
OK ।
।
কী বোরড পি
- । ।
Windows 95 keyboard । ।
-
1. Alphabetic key : A, B, C, D ...........Z
2. Numeric key : 0, 1, 2, 3, 4, ...........9
3. Function key : F1, F2, F3, F4 .........F12
4. Movement key : , , ,
5.
Special key : Home, Insert, End, Pause Break, Page Up, Page Down etc.
6. Command key : Alt (Alter), Ctrl (Control), SH (Shift)
Function Key :
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Key-board F1 F12 ।
। (Shift, Alt, Crtl key) mgš^‡q
।
Alphabetic Key :
Key-board A to Z ।
।
Numeric Key :
Key-board । ।
!, @, #, $, %, ^, &, *, (, ) -
(:) (;) ।
Character Shift Key ।
Esc Key :
Escape - Esc m¤^wjZ
Escape Key,
। Cancel KeyI ।
। : Word Perfect
।
Shift Key :
- । Caps key off
Capital Letter । mgš^‡q
। , - ।
Alt Key :
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Key-board Alt m¤^wjZ ’ ,
mgš^q ।
Ctrl Key :
Ctrl ’ - । ।
mgš^q ।
Caps Lock Key :
Caps or Caps Lock - Caps Lock Key.
। ।
- । Caps Lock, caps lock off
Caps Lock on ।
Insert Key :
Type Over mode off/on Insert Key Insert -
Type over mode । Type over mode ।
Type over mode ।
text ।
text ।
, bv¤^vi Insert Key ।
Enter Key :
Key-board ’ , Alphabetic character
bv¤^vi । ,
।
। ।
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Tab Key :
। -
Shift Key
।
Backspace Key :
Function Key F12 ।
। ।
। -
।
Delete Key :
Key Board ,
। , bv¤^vi ,
Numlock off ।
Arrow Key :
Keyboard Spacebar Arrow -
1. Up Arrow Key ()
2. Right Arrow Key ()
3. Down Arrow Key ()
4.
Left Arrow Key ()
Arrow । - Up Arrow
।
Print Screen Key :
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।
Display ।
Pause Key :
Pause Button ; । Pause Key
।
Home Key :
Home । -
Ctrl+Home Go to । bv¤^viwU
।
End Key :
End ।
Page Up Key :
Page Up ।
Page Down Key :
Page Down ।
Spacebar Key :
Keyboard j¤^vK…wZi ।
।
।
।
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Numeric Keypad :
Keyboard Numeric Keypad. Num Lock
। Num Lock Key on
Numeric Key । Num Lock Key off Numeric Key
। Num Lock Key off Numeric key Shift Key
।
Numeric Key ।
Arrow Key । Arrow Shift Key
। - Num Lock on Shift Arrow Key । Numeric
Numeric Keypad.
(
ইোেনট হিন সংগিহী )
Tanbir Ahmad Razib
Mobile No:-
01738-359555//01916-457075
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