SIZ Education | Computer Keyboard keys function | by @ahsansharif

Assalam-u-Alikum!

Hi SIZ members! I hope you all are well and good.

Today I explain the functions of
keyboard keys.

Keyboard:

Keyboard is the most commonly used input device data is mostly entered using a keyboard the buttons on the keyboard are known as keys. A standard keyboard contains 100 keys. The arrangement of keys on a keyboard is called keyboard layout the most popular keyboard layout is QUERTY. The letters q w e r t and y appears on the top of the main area of a keyboard.
The keys on computer keyboards are often classified as follows;

(i) Numeric Keys:

Numeric keypad is located on the right hand side of most keyboards. It has arithmetic operators keys +,-,*, / that are used in arithmetic operations and digits from 0 to 9. It has also a number lock. When this key is off keypad cannot be used to type numbers.

(ii) Function Keys:

Function key F1 to F12 are located at the top of the keyboard. The function keys are used to perform special functions. For example F1 key is used to get help in Windows.

(iii) Alphanumeric Keys:

Alphanumeric keys include all letters keys in alphabet A to Z and digits from 0 to 9.

(iv) Backspace key:

Backspace key is used to delete a single letter and number to the left of the cursor.

(v) Enter Key:

Enter key is used to enter commands and input data in the computer.

(vi) Caps Lock Key:

Caps lock is a toggle key. The character appears in upper case if it is pressed. The characters appear in lover case if it is not pressed. Numbers and symbols are not affected. The status light under caps lock turns on when it is pressed.

(vii) Tab Key:

Tab key is used to move the cursor to the next tab stop. It is also used in dialog boxes to move from one option or field to another.

Modifier Key:

These are used to modify the input of other keys. A specific key is pressed while holding down one of these keys to get the required result.
Different modifier keys are as follows;

(i) Ctrl Key:

CTRL Key produces different results depending on the type of software. It is used in combination with other keys as shortcut to some command. For example CTRL+O used to open a file.

(ii) Alt Key:

ALT key is used in combination with other keys to perform special functions. In Windows based programs it can be used to navigate menus and dialog boxes. For example ALT+F4 is use to close a file or program.

(iii) Shift Key:

SHIFT key is used to type capital letter and symbols. It is commonly used in word processor in combination with cursor movement keys to selected text.

Cursor control keys:

The cursor control key consist of arrow keys Home, End Page, up and Page down keys. These keys are used to move the cursor within the next or around the screen.

Special-Purpose keys:

These keys are used for special purpose and are as follows;

(i) Esc:

Esc key is used to terminate command and current task.

(ii) Delete:

Delete key is used to delete a single letter and number to the right of the cursor on the screen it is also used to delete the selected object.

(iii) Insert Key:

It is a toggle key used to switch between Insert Mode and Overtype Mode.

(iv) Print Screen:

It is used to capture everything that appears on the screen.

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Regards: @ahsansharif

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