COMPUTER GENERAL KNOWLEDGE

Firmware refers to programs permanently stored in Read-Only Memory (ROM), acting as a bridge between hardware and software components.

First generation computers exclusively used vacuum tubes for their internal circuitry and magnetic drums for memory, defining their technological era.

Page orientation, whether portrait or landscape, is a flexible document setting that can be easily adjusted at any stage of document creation or editing.

An operating system functions like a government, managing and coordinating all the computer's hardware and software resources to ensure smooth operation.

John Vincent Atanasoff and Clifford Berry are widely recognized for inventing the Atanasoff-Berry Computer (ABC) in 1940, the first electronic digital computer.

DBMS is the widely accepted acronym for Database Management System, which is software designed to manage and organize data efficiently.

Operation Sure Victory was a major Sri Lankan counter-insurgency military operation launched in 1997 against the Tamil Tigers during the civil war.

Ctrl+D is the standard keyboard shortcut used in many applications, including Microsoft Word, to quickly open the Font dialog box for text formatting.

HDMI stands for High-Definition Multimedia Interface, which is a standard digital interface used for transmitting high-quality audio and video signals.

HDD stands for Hard Disk Drive, which is a common non-volatile data storage device used in computers to store and retrieve digital information.

Spybot is an application program specifically designed to secretly gather user information from a computer and transmit it to others through the Internet.

The correct answer is 64 bits. The word length (or word size) of a computer refers to the maximum number of bits that the CPU can process, store, and transfer in a single operation. It determines the size of general‑purpose registers, integer arithmetic capabilities, and the maximum addressable memory space. While earlier personal computers used smaller word lengths, all modern PCs are built on 64‑bit architecture.

Why 64 Bits Is the Correct Answer

• Modern PC Standard: Since the mid‑2000s, every mainstream personal computer—whether running Windows, macOS, or Linux—has been powered by a 64‑bit processor (x86‑64 architecture from Intel/AMD or ARM64 from Apple Silicon and Qualcomm). This has become the baseline for even entry‑level desktops and laptops.
• Technical Advantages: A 64‑bit word length allows the CPU to handle massive integers (up to 2⁶⁴‑1) and directly address up to 16 exabytes of RAM (though practical motherboard limits are far lower). This far exceeds the 4‑gigabyte ceiling of 32‑bit systems, enabling seamless multitasking and large‑scale data processing.
• Software Requirement: Most modern operating systems and applications are compiled natively for 64‑bit processors. Even budget PCs today ship with 64‑bit processors and run 64‑bit operating systems, making "64 bits" the only accurate representation of a current‑generation personal computer.

Why the Other Options Are Incorrect

• 4 bits (Option 1): This was used in the very first microprocessors (like the Intel 4004, released in 1971), but they were designed for calculators and embedded systems, not personal computers.
• 8 bits (Option 2): Personal computers in the late 1970s and early 1980s (such as the Apple II and Commodore 64) used 8‑bit processors. These are obsolete by today’s standards.
• 16 bits (Option 3): The 16‑bit era included the Intel 80286 and early IBM PC/AT models. These were common in the mid‑1980s but were completely replaced by 32‑bit and later 64‑bit systems.

In summary, while historical PCs used smaller word lengths, the universal standard for personal computers today is 64 bits, making it the definitive answer.

Minicomputers are generally more powerful and have higher processing speeds than microcomputers, which are typically smaller and less powerful personal computers.

CAD is an acronym for Computer-Aided Design, a technology used by engineers and designers to create, modify, analyze, and optimize designs digitally.

Data represents raw, unorganized facts and figures, while information is data that has been processed, organized, and structured to become meaningful.

UNIVAC was one of the first commercial computers, representing the first generation due to its use of vacuum tubes for processing.

J. Presper Eckert, along with John Mauchly, was instrumental in designing ENIAC, the pioneering electronic general-purpose digital computer.

A small or intelligent device is often called so because it contains a sensor, allowing it to detect and respond to environmental changes.

RAM is an acronym that stands for Random Access Memory, a volatile type of computer memory for temporary data storage.

Data becomes information when it is processed and presented in a structured, understandable format, making it meaningful and useful to people.

An off-line device operates independently without direct connection or control from the central processing unit (CPU).

MS-Excel is a spreadsheet application software, not a programming language, unlike BASIC, COBOL, and C++.

The default style for new data entered into a new Microsoft Excel workbook is 'Normal', which applies general formatting without specific number or text styles.

Servers are specifically designed to provide shared resources and services to multiple client computers within a connected network environment.