Basic Structure Of Computer?/Basic Parts And Structure Of Computer?/Basic Structure In Computer?/Basic Logical Structure Of Computer?/Basic Structure Of Computer And Its Logical Operation?/basic structure of computer architecture?/basic structure of computer hardware and software?

What is a Computer?

"Computer is an Electronic device under the instruction and programming control"   and executes four basic operations 

a)      input

b)      processing

c)      output

d)     storage

 Parts of Computer Systems:

1.      Hardware  2. Software

Hardware:

        Physical component of computer such as mechanical &electronic                                  circuit which can be touched for example: Keyboard,Mouse,Monitor etc.

        Software:

                            A set of instruction given to computer for performing a specific task E.g

                            Application Program, Windows etc.

Input Unit:

Computer receive coded information from input where the function is to  read data

Example of input device: keyboard, joystick, trackball, mouse.

       Output Unit:

                          Its function is to send processed data to be displayed

•         Output device example

Storage type

•         Magnetic disk storage

•         Optical disk

–        Magneto-optical

–        CD-ROM

–        CD-R

–        CD-RW

–        DVD-ROM

•         Magnetic Tape Storage

Central Processing Unit (CPU):

CPU performs following operations.

•         Change data to information

•         Control center

•         One set of electronic circuit which execute stored instruction program

It performs following operation.

                                i.            Control Unit (CU)

                              ii.            Arithmetic Logic Unit (ALU)

Control Unit

•         Device which responsible to control

•         Instruct computer system to execute program

•         Communicate with other parts inside a device

Arithmetic Logic Unit (ALU)

It Perform mathematical operation and Perform logical operation. 

Arithmetic Operation:

It is used for performing following operation.

a.       Addition

b.      Subtraction

c.         Multiplication

d.      Division

             Logical Operation:
It is used for performing following operation.

a)      Evaluate condition

b)      Compare

c)      Can compare

a.       Numbers

b.      Characters

c.       Specialized character
You can also take help through this Lecture and would be understand this article:

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You  can take also help through the following links:

• https://www.google.com.pk/search?q=input+unit&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiw-56p1dbdAhVJiKYKHR1RDkIQ_AUIDigB&biw=1366&bih=608#imgrc=Xr6_6SLpp0Bl_M:
• https://www.google.com.pk/search?q=input+unit&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiw-56p1dbdAhVJiKYKHR1RDkIQ_AUIDigB&biw=1366&bih=608#imgrc=GEk9hiS2fI589M:

Written By:

			Ma'am Zuhra Javed(Msc CS)