Basic Computer and Fundementals

What is Computer?

  It is an Electronic Device
  It knows 0's and 1's.It is known as Binary language.
  Every Computer should runs on Operating System.

Architecture of Digital Computer

Operating System

Interface between Hardware and Software.

Hardware

We can touch physically but we cannot intreact easily.
 Major Types of Hardware Devices
   I)Input Device   ==> Example) Keyboard
 II)Output Device ==> Example)Monitor

Software

It is a set of Programs.

Major Types of Softwares

   I)System Softwares
      Example)Operating System
   II)Application Software
      Example)Word,Tally

ALU

   It stands for Arithmetical Logical Unit.
   It will process of our inputs  and it will send it to the output unit.
   To Process the inputs we use Processor(Intel,Pentium)

Memory

It is one kind of storage in computer.
Major types of Memory
   1)Primary Memory
       Example) RAM(Random Access Memory),ROM(Read Only Memory)
    2)Secondary Memory ==>
       Example) Hard Disk,SD Card,Pendrive

Memory Units

1)8 bits	1 Byte
2)1024 B	1 KiloByte
3)1024 KB	1 MegaByte
4)1024 MB	1 GigaByte
5)1024 GB	1 TeraByte