Computer Course For beginners

Duration : 2 Weeks Classes Per Week : 3

Lecture # 1Introduction To Computers &

Their Components

What is a computer ?

A computer is an electronic machine used toperform different tasks for e.g.: for gaming , listening songs , watching movies , chatting with Friends , doing some office work (like making a Presentation) and so on.

How a computer works ?

A computer works by taking commands givenby us or by a device present inside it and then gives us the result .

How we give commands to a computer ?

We give commands to a computer by using Some electronic devices like : A mouse , Keyboard , joystick e.t.c.

Components Of A Computer

A computer has following major components : i) CPU(Central Processing Unit)ii) Input Devicesiii) Output Devices

What is a CPU ?

A CPU is a combination of different components or parts responsible for performing different tasks .

What are output devices ?

The output devices like monitor ,LCD’s Connected to a CPU are used to show us the results generated by the CPU.

Parts Of A CPU

A CPU has : -i).Input/Output Portsii).Memoryiii).Processor

All these parts are present on motherboard an electrical circuit holding them together.

What is an input/output port ?

An input/output port is a point present normallyon back of cpu for connecting input and output devices to it .

What is memory ?

A memory is a place where CPU stores information either temporarily or permanently .

What is a processor ?

A processor is part of CPU responsible for performing all the operations on commands given by us through input devices.

Types Of Memory

There are two main types of memory : i).Temporaryii). Permanent

Temporary Memory

On a CPU the temporary memory is RAM (Random Access Memory ) and Cache Memory.

Permanent Memory

On CPU the permanent memory is ROM(Read Only Memory ) and Hard Disk.

In which unit speed of processor is measured ?

Speed of a processor is measured in Hz(hertz) .For e.g. we say Processor A is 3.20Ghz(Giga hertz) and Processor B is 2.00Ghz1khz(kilo hertz)=1000hz1mhz(mega hertz)=1000khz1ghz(giga hertz)=1000mhz

In which unit size of memory is measured ?

The size of memory is measured in bytes for e.g. we say processor A has 2mb of RAM processor b has 7Gb of RAM.1Mb(megabyte)=1024KB(Kilobytes)1Gb(gigabyte)=1024MB(Megabytes)1Tb(terabyte)=1024GB(Gigabytes)

How we select a CPU ?

We will select a CPU having greater memory(both RAM, Cache Memory and Hard disk) and a processor of higher speed

Lecture # 2Introduction To Software's &

Installation Of Windows Based Operating System

What is a Software ?

A software is like soul inside a cpu without it we cannot use it for performing different tasks. In reality they are a line of statements telling thecomputer what to do and how to do .

Different software's are used for differentpurposes like for playing songs and videos we use windows media player and so on.

What are the sources of getting a software ?

A software can be installed from a usb drive, cd/dvd/blue ray discs and from any website over the internet.

What is an operating system ?

An operating system provides an interface to auser so that he/she can use computer resources like storage(for storing data) ,speakers(for listening songs) and other different software's like for playing games ,watching videos e.t.c.

Installing Windows 7