Explanation

• Bit stands for Binary Digit.
• A bit is the smallest unit of data in a computer.
• Represents 0 or 1 (off/on state)
• 8 bits = 1 byte
• Used in all digital systems and computer memory.

Last verified on 08-06-2026

Explanation

• Windows is not hardware; it is an operating system (software).
• Hardware refers to physical parts of a computer.
• Monitor, Keyboard, and Printer are physical devices.
• Software includes programs that run the computer system.
• Windows helps manage computer operations and hardware.

Last verified on 08-06-2026

Explanation

• Keyboard is not software; it is a hardware device used for input.
• Software refers to programs that run on a computer.
• Operating System, Drivers, and Word Processor are all software types.
• Hardware includes physical components you can touch.
• Keyboard is used to enter data into the computer.

Last verified on 08-06-2026

Explanation

• The primary function of the Arithmetic Logic Unit (ALU) is to perform arithmetic and logical operations.
• ALU is a core part of the CPU.
• It handles calculations like addition, subtraction, multiplication, and division.
• It also performs logical operations like AND, OR, NOT, comparisons.

Last verified on 08-06-2026

Explanation

• DOCX is the newer version of DOC, the original official Microsoft Word file format. 
• Microsoft Word 97 - 2003 Document extension (.doc).
• Microsoft Word 2007 to till date Document extension (.docx).

Additional information:

• .xls extension of Excel.
• .ppt extension of PowerPoint.
• .txt extension of Text files.
• .pdf extension of Portable Document Format.

Last verified on 15-02-2026