Showing posts with label Input devices. Show all posts

How to Use Keyboard Step by Step - Urdu Guide

As we all know that keyboard is commonly used input device for computer, now it's the standard for sending textual information, commands and instructions to the computer. However, today we have also touch-input technology, which can help us to do similar functions. We'll discuss these are in the market and who use them. Keyboard is commonly used input device for this purpose, and it's most recommended to these types of essential tasks.
Now let's talk about the basic components of the keyboards, so you can understand that what you can do with your keyboard.

Let’s Start Exploring Your Keyboard!

1) Insert or Delete Alphabet/Numeric Characters:

1. In keyboard, there are a group of Alphabetic keys from 'A' to 'Z'. After these keys at bottom there is a spacebar button.

2. Above Alphabetic keys, there are Numeric keys in a row from '0' to '9'. These numeric keys have some symbolic keys as well that we mostly use every(@, #, ^, and $).

3. You can see a group of keys like a calculator at the right side of the keyboard which known as 'Numeric keypad'. We use this to insert numeric characters. There is also a 'Num Lock' at the right corner of the keypad which is a toggle button (on/off button). When you turn on Num Lock key, you can type numeric characters and when turned off can be used to as cursor control keys/or a mouse pointer.

4. At very right of the numeric keys you'll backspace button, which used to delete one character to the left.

(Tip: Press Ctrl+Backspace to delete one word to the left).

5. Delete Key usually located on the Cursor-control key, the purpose of this key is to delete single character from right side each time and this continues whenever you press Delete key.

6. Ins or Insert key is a toggle key located near cursor-control keys. Generally, When this key is turned on, and you started to type between characters' type already, then it automatically creates space new between these existing characters. However, if you turn off this key, newly typed character will replace with the previously inserted characters. This operation is known as 'Overwriting'.

While Typing you always see a black blinking vertical bar which moves towards right, it's commonly known as 'cursor', we also call it the insertion point.ack vertical bar blinking and moving towards right when you type, it usually known as 'cursor'. We also call it insertion point.

2) Perform Variety of Task By Applying Function Keys & Shortcut Keys

1. There are two Enter keys in the keyboard, which used to confirm any operation.

2. In very old days, there were two known types of Keyboard 'Enhanced' and 'Non-Enhanced' categorized based on the number of keys in keyboard. Nowadays, Enhanced keyboard is the standard which also contains 12 function keys, which are located above the numeric keys. The main purpose of these keys is to perform specific tasks. At very left of function keys there is an 'Escape' or 'Esc' key, which used to end or quit running operation.

3. A Keyboard has six modifier keys, two Ctrl or Control Keys, Two Alt or Alternate Keys and two Shift keys. These keys are often used to apply shortcut keys.

4. You can use Shift key to change the letter case to lower or capital-case. Suppose if you're typing alphabets and press Shift and C simultaneously, then letter case will change to capital-case. Basically, Shift key does the reverse any task. There is a Caps Lock key which is a toggle key (on/off key). When it's turned on you can type the alphabet letters in Capital-case.

5. Nowadays, keyboard is included with Windows Key by which you can apply shortcut keys that are associated with this key. For example, if you just press Windows Key it opens the Start Menu.

3) Navigate Around Items or Objects:

1. Keyboard has a 'Tab' key. This key is used to insert tabulation and also use to move from one object to another in the Operating system's Interface.

2. Keyboard has 8 or more Cursor Control keys. The first four keys are ↑Up, ↓Down, ←Left and →Right. A Home key (Which take the cursor to initial location of any object/item). an End key (Which take the cursor to last location of any object/item). A Page Up or Pg Up key(which take the cursor to one page above of the information currently showing) and a Page Down or Pg Dn key (which take the cursor to one page bottom of the information currently showing).You can also see these keys in numeric keypad, if you turn off Num lock key.

4) Some More Important Keys You Need to Know:

3. A Scroll Lock or Scr lk key in Keyboard used to lock scrolling function, which located near Print screen key.

4. There is Print Screen or Prnt Scn key, captures the screenshot of the currently displayed items/objects in the screen and copies the captured screen to Clipboard (will discuss later).

5. If you want to stop a running process temporarily, then you can press Pause/Break key.

6. A standard keyboard has also included with a Right-click Context Menu key opens the menu when use press presses the Right-click button.

This is all in the keyboard you have it in your home or office, office. I'm sure that an average person knows all these things, because if you work in the program like Microsoft Word, Excel then you'll play with all these keys and shortcuts.

Let’s Play the Game!

Now let’s play this game with me by writing comments with the ‘name’ of the key or the group of keys that I marked with a number.

To Download this article in Urdu version then click below:

Download Chapter 03: How to Use Keyboard Device Step by Step in Urdu

<<< Next: A Simple Introduction to Standard Mouse in Urdu >>>

Please read the remaining parts of lesson 3 by clicking below:

2. Introduction a Computer Mouse
3. An Essential Guide to CPU

Computer Keyboard, Is Like a Typewriter???...

Keyboard is the most commonly used input device for computer systems. It has derived from the old typewriter. But it's not actually like a typewriter, however both have many same keys which do similar function like pressing a key and character prints. In general, as a standard way to interacting with computer system, a Keyboard actually used to execute commands not only for typing characters.

A Keyboard a keypad device which consists of keys/buttons that user can press to print character or executing commands. When a user presses it process in this way:

* Keyboard controller detects this keystroke

* Places a scan code in the keyboard buffer that indicates which key is pressed

* These scan codes go through the operating system

* Finally CPU accepts it to print on the screen

These scan codes processes in the form of ASCII codes(American Standard Code for Information Interchange).

On the basis of keys and their functions a keyboard is different than typewriter. It has similar keys for typing characters but some additional keys for navigation, numeric keypad and function keys. These keys mainly used to accomplishing of commands pressed by the user.

In later post, we’ll discuss how keyboards key function, and how a user can use them to fulfill their working purposes.

Introduction to Input & Output Devices - Just like fun

As we know that Computer process information in three steps:

1) Inputting data to Computer through input devices (Keyboard, Mouse)
2) Processing data inputs in Central Processing Unit (CPU)
3) Show processed data to output devices (Monitor Screen)

As everybody knows that today computers have too many input and output devices. So, It's not enough tell all about them and their functions in one piece of information. That's why we're going to discuss them one by one in a fun like way.

At first, Keyboard or Mouse are commonly the basic way to interacting with your computer. But do you know input devices aren't just bound to keyboard & mouse, So what's another???.. , if you've money you can buy any sort of input device for your own purposes which are available in the market. An input device could be a microphone, scanner, card reader, etc. All input devices are use to make your work possible to do, easy and faster that you can't imagined do it by yourself with your computer.

At second, similar case for output devices, in which Monitor is very commonly used output device. Without it you can't see what input you have given to the CPU. If someone has damaged your monitor so you must've to worry about to get another one huh, What it means if the computer without monitor, yes!!!… a man without head oh wow you guessed it, you're a genius. As like, input devices there are many output devices are available on the basis of purpose of your work. Such as, if you want a hard copy of your college notes you need a printer. If you don't have money to buy it, then just go to your near printing shop for your needs, and have a fun.

It’s all from today, Just little fun & little info. In later posts, we'll discuss about input, output devices more briefly and seriously. So, go ahead and comment below to tell me what’s wrong with it.