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:

        Thank You!😊

If u have any question about this article then comment plz...

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)

Introduction To Microscope?/What is Microscope?/Use Of Microscope?

 

Its a new platform for AL-Kausra's learners in each subject.😊😊This Article is defining Introduction to Microscope,What is Microscope?/Use Of Microscope?
Microscope:

A magnifying lens is an instrument used to see objects that are too little to be seen by the exposed eye.

Microscopy is the study of exploring little protests and structures utilizing such an instrument.

Here we examine about compound (or light) magnifying lens.

Essential parts of the magnifying lens:

Eyepiece Lens: the focal point at the top that we glance through. They are normally 10X or 15X power.

Tube: Connects the eyepiece to the target objective lenses.

Arm: Supports the tube and interfaces it to the base

Base: The base of the magnifying instrument, utilized for help

Illuminator: A consistent light source utilized instead of a mirror. On the off chance that you’re magnifying lens has a mirror; it is utilized to reflect light from an outside light source up through the base of the stage.

Stage: The level stage where we put our slides. Stage cuts hold the slides set up. On the off chance that our magnifying instrument has a mechanical stage, we will have the capacity to move the slide around by turning two handles. One moves it left and right, alternate moves it here and there.

Spinning Nose-piece or Turret: This is the part that holds at least two target focal points and can be turned to effectively change control.

Target Lenses: Usually you will discover 3 or 4 target focal points on a magnifying lens. They quite often comprise of 4X, 10X, 40X and 100X forces. At the point when combined with a 10X (most normal) eyepiece focal point, we get add up to amplifications of 40X (4X times 10X), 100X, 400X and 1000X.

Rack Stop: This is an alteration that decides how shut the target focal point can get to the slide. It is set at the plant and shields understudies from turning the powerful target focal point down into the slide and breaking things

Diaphragm or Iris: Many magnifying instruments have a rotating disk under the stage. This stomach has diverse estimated gaps and is utilized to shift the power and size of the cone of light that is projected upward into the slide.

If u have any question then comment plz...
Written By:
                                 Ma'am Noreeta Ashfaq(BS Zoology)

What is Matter and Atom?/Define Matter and Atom?

Its a new learning Point for AEC Learners in every subject.😇This article is defining definition of matter in Chemistery,Basics  of matter and atom and also  useful in 9th class students specially.

Matter

“Matter is anything that occupies space and has mass.”

For Example:

Everything around us made up of a matter. Like a book is a matter because book has mass and occupy space. Even Human being is also an example of mass. Everything in the universe is matter except the gasses that are present in the atmosphere but, if these gasses are enclosed in cylinder they also have volume and occupy space.

Matter is made up of” atoms”.

Atom

“Atom is smallest particle of matter which takes part in a chemical reaction”

• ·         We can’t see atom because they are very small.
• ·         The word atom means invisible.

Written By:

                          Ma'am Sidra Mushtaq(BS Chemistery)