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.

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. When the computer is booting, the BIOS is loaded from the ROM memory.

2. ROM is the abbreviation of Read Only Memory. It is a chip that contains data inserted by the manufacturer that is rarely removed or modified.

3. It houses the BIOS.

4. ROM is a read-only memory.

5. ROM is non-volatile memory.