1. Microsoft PowerPoint: This is the most popular slide show presentation software. It is easy to use and has many features that allow you to create engaging and informative slideshows.

2. Google Slides: It is a free online slideshow presentation software. It offers similar features to PowerPoint and can be used in any web browser.

3. LibreOffice Presentation: It is a free and open-source slideshow presentation software. It offers features similar to PowerPoint and Slides.

4. Adobe Presentation: It is a professional slide show presentation software. It has more advanced features than PowerPoint and Slides.

1. The input device is the device that provides data and control signals to the computer.

2. Major examples of input devices -

- Keyboard, Mouse, Scanner, Joystick, Microphone, Magnetic Ink Character Recognition (MICR), Optical Character Reader (OCR), Touchpad, Touch Screen, Webcam.

The mobile wallet can be used for the following functions:

1. Payment: Using a mobile wallet, you can make payments both online and offline. You can pay using your mobile wallet at any store, restaurant, or other business that accepts mobile wallets.

2. Money Transfer: Using a mobile wallet, you can transfer funds from your bank account to another person's bank account. You can send money to your friends, family, or any other person using a mobile wallet.

3. Recharge and bill payments: Using a mobile wallet, you can pay your mobile phone, data pack, electricity bill, water bill, and other bills.

4. Point of Sale (POS) Transactions: Using mobile wallets, you can make payments through POS machines. For POS transactions, you simply need to open your mobile wallet app and tap your phone on the POS machine to make a payment.

The following are required to file income tax return online:

PAN Card: It is a mandatory document that authenticates you as identity and address proof for filing income tax returns.

Aadhaar Card: This is an optional document that can be used as identity proof.

Form 16: This is a certificate that shows your income and deductions. Your employer provides you with Form 16.

Bank account details: You will use your bank account to pay your return.

Copy of previous year's return: A copy of the previous year's return is also required.

Internet Connection: You will need an internet connection to file your return on the Income Tax Department website.

1. PPI (pixels per inch) refers to display resolution, or, how many individual pixels are displayed in one inch of a digital image.

2. DPI (dots per inch) refers to printer resolution, or, the number of dots of ink on a printed image.

3. The physical size of an image refers to the dimensions in which it will print (ex: 8.5" x 11") or the pixel dimensions of an image displayed on the web (ex: 600 pixels x 800 pixels).

1. Blind carbon copy is the extended form of BCC used in e-mail communication.

2. It is used to send a copy of an email to a person without informing the recipient about it i.e. the identity of the recipient mentioned in the 'Bcc field' is hidden from other recipients receiving the same email.

3. Recipients in the BCC list can see every other email address, including the To and CC lists.