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

1. In MS Excel 2010, the address of the topmost cell is Al.

2. Microsoft Excel is a commercial spreadsheet application written and distributed by Microsoft for Microsoft Windows and Mac OS X.

3. Microsoft Excel is a spreadsheet tool capable of performing calculations, analyzing data, and integrating information from different programs.

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. 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.

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. The full form of USB is Universal Serial Bus.

2. USB is a wired device with the help of which you can connect any other device like mobile with laptop, mobile with computer etc.

3. Apart from this, you can also insert a memory card inside the laptop with its help because it is a port in which we can insert things like Pendrive, Card Reader, Data Cable etc.

1. We live in an eCommerce-centric world where all types of business models are growing at a rapid pace.

2. This model involves electronic transactions between two customers. Typically, they transact through a third party that provides a platform to those two customers. Websites selling second-hand items are examples of the C2C eCommerce model.