Difference between revisions of "Digital-Divide/D0/Getting-to-know-computers/English-timed"

| Welcome to the '''Spoken Tutorial''' on '''Getting to know Computers'''.

| In this tutorial, we will learn about  

| Generally, there are 2 types of computers -  

| ''' Desktop'''  or '''Personal Computer''' and '''Laptop'''.

| Functions of a computer-

| A '''computer''' performs five major functions irrespective of its size: 

| It accepts '''data''' or ''' instructions''' by way of '''input '''

| It processes '''data''' as required by the user  

| It stores '''data'''  

| It gives results in the form of '''output '''

| It controls all operations inside the computer.

| Basic organization of a computer is as shown in this block diagram.  

| '''Input unit ''', '''Central Processing unit ''',

| '''' Output unit '''.

|The '''Input unit''' helps to  

|enter the '''data''' and '''programs''' into a computer system in an organized manner.

| ''' Keyboard, mouse, camera''' and '''scanner''' are some of the '''input''' devices.

| performs operations like arithmetic and ''' logical''' operations and  

| stores '''data''' and '''instructions. '''

| '''Monitor''' and '''printer''' are some of the '''output''' devices.

| Generally, a '''desktop computer''' has 4 main components:

|'''Monitor''' '''CPU'''

| '''Keyboard''' and '''Mouse '''.

| This is a '''monitor''' or the '''computer screen''' as we call it.  

| It displays the computer's '''user interface. '''

| One can open various '''programs''' and interact with the '''computer''' using the '''keyboard''' and '''mouse'''.  

|The ''' keyboard''' is designed to enter text, characters and other '''commands''' into a '''computer.'''

| Pressing the ''' right mouse button''', activates more non-standard actions like '''shortcuts'''.  

|The '''mouse wheel''' is used to scroll up and down by rolling the '''scroll button. '''

| The ''' computer mouse''' is an alternative way to interact with the '''computer''' besides the ''' keyboard. '''

| There is a '''reset''' button too which helps us to '''restart''' the '''computer''', if required.  

|This is done using the '''cables.'''

|There are many components inside the 'CPU'.

|When the computer is ON, all these components work and generate heat.  

|'''Fans''' at the back, provide the air flow required to cool the components.  

|Otherwise, overheating can cause damage to the 'CPU', often leading to data loss.  

|Place all the '''cables''' on the table, as shown.  

|Connect the '''power cable''' to the ''' monitor''' as shown.  

|Connect it to the '''CPU''' as shown.  

|Then, connect it to a '''power supply socket'''.

|Next, connect the ''' keyboard cable''' to the '''CPU''' as shown.

|You can connect the '''mouse''' to the '''port''' which is “green” in colour.  

|This is a ''' LAN cable'''

|and this is a '''LAN port.'''

|The ''' LED light''' will blink when the ''' LAN port''' is active and receiving activity.  

|Now, let's look at the '''audio jacks.'''  

|Usually, you will see a '''string''' of words on a black screen when your '''computer''' first turns on.  

|the computer's '''central processing unit, '''

|and information about the '''hard disk drives''' and '''floppy disk drives'''.  

|'''BIOS''' is the software which gives the '''CPU''' its first instructions when the '''computer''' is turned on.  

|When all the necessary checks are done, you will see the operating system's '''interface. '''

|And if you are a '''Windows''' user, you will see this screen.  

|A '''laptop''' is small and light enough to sit on a person's lap while in use.  

|It has most of the same components as a ''' desktop computer''' including-

|a '''display, '''a '''keyboard, '''

|a ''' touchpad''' which is the pointing and navigating device,

|It also has a '''lan port'''  and ''' USB ports.'''

|There is a ''' video port''' using which one can connect a ''' projector''' to the '''laptop. '''

|The '''audio jacks''' are easily identifiable with respective '''icons''' for '''mic''' and '''headphones'''.  

|This is the inbuilt '''cooling fan''' in the '''laptop.'''

|This helps to keep the '''laptop''' from overheating.  

|A ''' laptop''' is powered by electricity via an ''' AC adapter''' and has a rechargeable battery.  

|Let us summarize. In this tutorial, we have learnt:

|and how to connect the various components of a '''desktop'''.

| Watch the video available at the following link.

|It summarizes the Spoken Tutorial project.

|If you do not have a good bandwidth, you can download and watch it.

| The Spoken Tutorial project team: conducts workshops using spoken tutorials.

| Spoken Tutorial Project is a part of the "Talk to a Teacher" project,

|supported by the National Mission on Education through ICT, MHRD, Government of India.

|More information on this mission is available at the following link.

| The '''animation''' and '''3D modeling''' for this tutorial is done by Arthi.

|This is Nancy Varkey from the spoken tutorial project, IIT Bombay, signing off.