1. The inbox is the place where e-mail messages are received in an e-mail client or online e-mail account.

2. The Inbox is the default location for all incoming mail, unless rules are set to forward messages to another e-mail address, folder, or program.

3. All e-mail clients like Microsoft Outlook or Mozilla Thunderbird and online e-mail accounts like Gmail and Outlook.com have an Inbox folder.

1. Application software is closely related to database management systems M.S. Excel related.

2. It is system software for creating and managing databases.

3. It is software designed to store, retrieve, define, and manage data in a database.

1. A web browser is software used to view websites.

2. When a user requests a web page from a particular website, the browser retrieves its files from the web server and then displays that page on the user's screen.

3. Browsers are used on multiple devices, including desktops, laptops, tablets, and smartphones.

4. Some of the famous internet browsers in the world are – Google Chrome, Microsoft Edge, Microsoft Internet Explorer, Mozilla Firefox, Opera, Apple Safari, and Amazon Silk.

An electronic payment system using debit cards and credit cards can be done in

1. In Microsoft PowerPoint, the Ctrl + D shortcut key inserts a duplicate of the selected slide.

2. Ctrl+D is a keyboard shortcut used in many computer programs to perform various tasks. In a web browser, pressing Ctrl+D adds the current webpage to your bookmarks or favourites list.

3. In Microsoft Excel and Google Sheets, pressing Ctrl+D fills a cell and overwrites it with the contents of the cell in a column above it.

1. The Control key, also called the Ctrl key, is a modifier key found on most computer keyboards. It's usually located in the lower left part of the keyboard, next to the Caps Lock and Tab keys.

2. The Control key is used in combination with other keys to perform various keyboard shortcuts. For example, pressing Ctrl+C copies the selected text to the Clipboard, pressing Ctrl+V pastes text from the Clipboard, and pressing Ctrl+S saves the current document.

3. Various uses of control keys-

Ctrl+C: Copy

Ctrl+V: Paste

Ctrl+X: Cut

Ctrl+Z: Undo

Ctrl+Y: Redo

Ctrl+A: Select all

Ctrl+B: Bold

Ctrl+I: Italic

Ctrl+U: Underline

Ctrl+S: Save

Ctrl+O: Open

Ctrl+N: New

Ctrl+P: Print

Ctrl+F: Find

Ctrl+H: Replace

Pressing Ctrl+Shift+Esc opens the Task Manager.

Pressing Ctrl+Alt+Delete opens the Windows Security screen.

1. You can switch pages between portrait and landscape layouts in MS Word, 2010 using the orientation shortcut.

2. The two most common types of orientation are portrait and landscape.