Introduction to Computers : MCQs & PYQs with Explanation

Option A

Von Neumann architecture is one of the primary foundational computer architectures that describes the basic structure of computer systems with a shared memory for instructions and data.
The Microarchitecture refers to how the architectural instructions are implemented in hardware, detailing the processor’s internal structure.

Option A

Option B

A Point (pt) is the standard typographic unit for measuring Font Size and many other typographic elements. One point is equal to 1/72 of an inch.

A Pixel (px) is the smallest unit of a digital image or display. It represents a single point of color on a screen. Pixels are used to measure screen resolution, images, and text size on digital devices. The size of a pixel varies depending on the screen resolution (DPI/PPI). Higher resolution screens have smaller pixels, producing sharper images.

• DPI = Dots Per Inch.
• PPI = Pixels Per Inch.

Option D

Audio file formats are specialized file types designed to store or manage sound data.

• The .wav extension stands for Waveform Audio File Format, developed by Microsoft and IBM, and is commonly used for storing uncompressed, high-quality audio. 
• The .mp3 format, created by the Moving Picture Experts Group (MPEG), is a widely popular lossy compression standard, ideal for music, podcasts, and online streaming due to its smaller file size. 
• The .mid extension refers to MIDI (Musical Instrument Digital Interface) files, which do not contain actual sound but instead store digital instructions that control musical instruments, making them widely used in music production.
• In contrast, .rar is not an audio format. It is a Roshal Archive (RAR) file used for compressing and bundling multiple files together, unrelated to audio storage or playback.

Option B

Computer generations are classified based on the technology used in their hardware. Each generation shows significant improvements in speed, size, reliability, and efficiency over the previous one. They also differ in the type of memory, input/output devices, and programming languages used, reflecting the evolution of computing technology over time.

Must Know:

• ENIAC: Electronic Numerical Integrator and Computer, developed in 1945, was the first general-purpose electronic computer.
• UNIVAC I: Universal Automatic Computer I, introduced in 1951, was the first commercially produced digital computer in the U.S.
• IBM 701: International Business Machines 701, released in 1952, was IBM's first commercial scientific computer. 
• EDVAC: Electronic Discrete Variable Automatic Computer, completed in 1951, was one of the earliest electronic computers.
• EDSAC: Electronic Delay Storage Automatic Calculator.
• IBM 1401: Introduced in 1959, was a transistorized computer system used for business data processing.
• CDC 1604: Developed in 1958, was one of the first commercially successful transistorized computers.
• PDP-8: Released in 1965, was the first commercially successful minicomputer, using integrated circuits.
• PDP-11: Introduced in 1970, was a series of 16-bit minicomputers using integrated circuits.
• Intel 8086: Introduced in 1978, was a 16-bit microprocessor, marking the beginning of the x86 architecture.
• IBM PC: Introduced in 1981, was a personal computer based on the Intel 8088 microprocessor.
• Apple II: Released in 1977, was one of the first pre-assembled personal computers.

Option C

The control unit in a computer is responsible for directing the operations of the processor. It does this by generating Control Signals, which coordinate and manage the activities of other components, such as the ALU, memory, and input-output devices. These control signals tell each component what action to perform, when to perform it, and how to respond to various instructions.

Option B

Supercomputers are extremely high-performance computers designed to perform complex and large-scale calculations at very high speeds. CRAY-2 is a famous supercomputer developed by Cray Research in the 1980s.

Option D

Computers are classified based on size, processing power, and purpose.

Parallel Computing: A method where multiple processors perform tasks simultaneously to increase speed. It is a computing technique, not a class of computer based on size or capacity.

Option A

Option B

In modern education, technology is integrated to support, enhance, and facilitate teaching and learning. The use of technology to enhance the learning process in education is called Information and Communication Technology (ICT).
The ICT focus on a broad range of digital tools and resources such as computers, the internet, multimedia software, educational apps, and communication technologies like email and video conferencing.

Option B

A computer has several key characteristics that make it a powerful tool. It is fast (Speed), capable of performing multiple types of tasks (Versatility), accurate and dependable (Reliability), and can work tirelessly on repetitive tasks without errors (Diligence).

Option C

Throughput refers to the number of processes or tasks completed per unit time in a system. It is an important performance metric in operating systems.
Higher throughput means more processes are completed in less time and system performance is better.

Option C

Option C

Computer generations are classified based on the technology used in their hardware. Each generation shows significant improvements in speed, size, reliability, and efficiency over the previous one. They also differ in the type of memory, input/output devices, and programming languages used, reflecting the evolution of computing technology over time.

Must Know:

• ENIAC: Electronic Numerical Integrator and Computer, developed in 1945, was the first general-purpose electronic computer.
• UNIVAC I: Universal Automatic Computer I, introduced in 1951, was the first commercially produced digital computer in the U.S.
• IBM 701: International Business Machines 701, released in 1952, was IBM's first commercial scientific computer. 
• EDVAC: Electronic Discrete Variable Automatic Computer, completed in 1951, was one of the earliest electronic computers.
• EDSAC: Electronic Delay Storage Automatic Calculator.
• IBM 1401: Introduced in 1959, was a transistorized computer system used for business data processing.
• CDC 1604: Developed in 1958, was one of the first commercially successful transistorized computers.
• PDP-8: Released in 1965, was the first commercially successful minicomputer, using integrated circuits.
• PDP-11: Introduced in 1970, was a series of 16-bit minicomputers using integrated circuits.
• Intel 8086: Introduced in 1978, was a 16-bit microprocessor, marking the beginning of the x86 architecture.
• IBM PC: Introduced in 1981, was a personal computer based on the Intel 8088 microprocessor.
• Apple II: Released in 1977, was one of the first pre-assembled personal computers.

Option B

Computers can be classified into three types based on functioning (how they process data):

1. Analog computers process continuous data and are used for measurements and scientific calculations.
2. Digital computers process discrete data, using binary digits (0s and 1s), and are the most common type today.
3. Hybrid computers combine the features of both analog and digital computers to process both types of data.

Therefore, Hydrobrid is not a valid category of computers based on their functioning.