Explanation

• EBCDIC stands for Extended Binary Coded Decimal Interchange Code.
• Developed by IBM.
• Used mainly on IBM mainframe computers.
• It is an 8-bit character encoding system.

Last verified on 08-08-2026

Explanation

• DMA stands for Direct Memory Access.
• It is a method that allows an I/O device to transfer data directly to or from main memory (RAM).
• The CPU does not need to handle every individual byte of the transfer.
• DMA can improve data-transfer speed and reduce CPU workload.
• It is commonly used for devices such as disk drives, network cards, and sound cards.

Last verified on 07-08-2026

Explanation

• A cable is necessary to attach a printer to a computer.
• A printer commonly connects to a computer using a USB cable.
• Modern printers may support USB, Wi-Fi, or Bluetooth connections.

Last verified on 07-08-2026

Explanation

• The Backspace key is used to delete a character to the left side of the cursor in MS Word.
• It removes the character immediately before the cursor.

Additional information:

• The Delete (Del) key removes the character to the right side of the cursor.
• Ctrl + Backspace → Deletes the previous word

Last verified on 07-08-2026

Explanation

• Move the cursor to the top of the next page: Ctrl + Page Down

Additional information:

• Move the cursor to the top of the previous page: Ctrl + Page Up
• Move the cursor by scrolling the document view down by one screen: Page Down
• Move the cursor to the end of the document: Ctrl + End

Last verified on 07-08-2026

Explanation

Explanation

• DOS (Disk Operating System) is a single-user operating system.
• It is designed for one user at a time.
• DOS uses a Command-Line Interface (CLI) instead of a graphical interface.

Additional information:

• Examples of Multi-user OS: Windows, Linux, UNIX, macOS

Last verified on 06-08-2026

Explanation

• A computer application program that displays data arranged in rows and columns is called a Spreadsheet.
• Spreadsheets organize data in cells formed by the intersection of rows and columns.
• They are used for calculations, data analysis, charts, and record keeping.
• Examples include Microsoft Excel, Google Sheets, and LibreOffice Calc.
• A spreadsheet file usually contains multiple worksheets.

Last verified on 07-08-2026

Explanation

• Shortcut key for center alignment: Ctrl+E

Additional information:

• Center align means middle of the page.
• Ctrl + R -- Align selected text or line to the right.
• Ctrl + M -- Indent the paragraph.

Last verified on 07-08-2026

Explanation

• BIOS stands for Basic Input Output System.

Additional information:

• BIOS is a firmware stored on a computer’s motherboard.
• Initializes hardware during booting and provides runtime services.
• Acts as an interface between operating system and hardware.

Last verified on 04-02-2026