Explanation

OCR Function:

OCR technology extracts text from images/scanned PDFs and converts it into machine-readable, editable text (e.g., turning a book scan into a Word file).

Common Uses:

Digitizing printed documents.

Automating data entry (e.g., invoices, receipts).

Enabling text searches in scanned files.

Explanation

The OS (e.g., Windows, macOS, Linux) manages all hardware/software operations, including:

• Memory allocation.
• File management.
• Running applications (like MS Word).

Example:

Without an OS (Operating System), a computer cannot boot or execute any program

Explanation

Six Degrees (1997):

• Launched in 1997, it allowed users to create profiles and connect with friends, pioneering modern social networking.
• Shut down in 2001 but set the template for future platforms.

Explanation

A pixel (picture element) is the smallest unit of a digital image.

Higher pixel count = Sharper image (e.g., 4K resolution has 3840×2160 pixels).

Explanation

User-defined functions are those that are created by the programmer to perform specific tasks.

Unlike pre-defined functions, they offer custom behavior and improve code reusability and structure.

Explanation

Arrays store elements in a sequential (linear) order, where each item has a fixed position (index).

They allow efficient access to elements using their index, making them a linear data structure.

Explanation

Phishing is a cyber-attack technique where fake emails or websites are used to trick users into giving personal information.

It often targets passwords, credit card numbers, and login details by pretending to be legitimate sources.

Explanation

Clock speed measures how fast a computer's processor can execute instructions.

It is expressed in Gigahertz (GHz).

1 GHz equals 1 billion cycles per second, indicating the processor’s speed.

Explanation

Audacity is a free, open-source software used for recording and editing digital audio.

It supports features like cutting, mixing, noise reduction, and multi-track editing.

Explanation

Divide and Conquer works by dividing a problem into smaller sub-problems, solving them, and then combining the results.

Famous examples include Merge Sort and Quick Sort.