Computers Basic MCQs Set-1

ALU stands for Arithmetic Logic Unit. It is a fundamental component of a computer processor that performs arithmetic and logical operations on binary numbers. The ALU is responsible for performing operations such as addition, subtraction, multiplication, division, bitwise AND, bitwise OR, and comparison operations. It is a critical part of a CPU and is responsible for executing the instructions that make up a computer program.

The brain of any computer system is the Central Processing Unit (CPU). The CPU is a hardware component that controls the flow of data within the computer system and performs the majority of the processing operations. It fetches instructions from memory, decodes them, executes them, and stores the results in memory.

The CPU consists of several components, including the Arithmetic Logic Unit (ALU) and the Control Unit (CU), which work together to process instructions and data. It is often referred to as the "brain" of the computer because it performs the bulk of the computing operations and coordinates the activities of all the other components in the system.

The key technologies for the Fifth Generation Computer System (FGCS) seem to be VLSI architecture, parallel processing such as data flow control, logic programming, knowledge base based on relational database, and applied artificial intelligence and pattern processing.Inference machines and relational algebra.

The concept of artificial intelligence (AI) was first introduced in the 5th generation of computers, which spanned the period from the mid-1980s to the early 1990s. The main focus of this generation was on the development of AI technologies and expert systems that could mimic human intelligence and decision-making capabilities.

The 5th generation of computers also saw the development of new programming languages and software tools that were designed to support AI applications. Some of the notable achievements of this generation included the development of advanced speech recognition systems, natural language processing, and computer vision technologies. However, it should be noted that AI technologies and concepts have continued to evolve and be refined in subsequent generations of computers as well.

When a key is pressed on a keyboard, the standard that is typically used for converting the keystroke into the corresponding bits is the ASCII (American Standard Code for Information Interchange) standard. The ASCII standard is a widely used character encoding system that assigns unique numerical codes to each character, including letters, digits, and symbols.

Each key on a keyboard is associated with a unique ASCII code, which is sent to the computer as a series of bits when the key is pressed. These bits are then processed by the computer's operating system and other software applications to perform the desired action, such as displaying a character on the screen or executing a command.

The device that is commonly used as the standard pointing device in a Graphical User Environment (GUI) is the computer mouse. A mouse is a small handheld device that is connected to the computer and used to control the movement of a cursor or pointer on the computer screen. By moving the mouse, the user can control the position of the cursor and interact with graphical elements on the screen, such as icons, windows, and menus.

The mouse typically has one or more buttons that can be clicked to perform actions such as selecting items or opening menus. While there are other pointing devices available, such as trackpads and touchscreens, the mouse remains the most widely used and recognized pointing device in a GUI environment.

A pen drive, also known as a USB flash drive or a thumb drive, is a small portable storage device that uses flash memory to store data. It typically connects to a computer through a USB port and can be used to transfer files and data between devices. Pen drives are popular because of their small size, high storage capacity, and ease of use. They are often used to store and transfer personal files, documents, photos, music, and other types of data.

Pen drives are also commonly used as a backup storage solution and can be used to boot operating systems or run software applications. They have become an essential tool for many people and are widely used in both personal and professional settings.

The section of the CPU that is responsible for performing mathematical operations is the Arithmetic Logic Unit (ALU). The ALU is a digital circuit that performs arithmetic and logical operations on binary numbers, such as addition, subtraction, multiplication, division, bitwise AND, bitwise OR, and comparison operations.

The ALU receives input data from the computer's memory and other registers within the CPU, performs the desired operation, and then stores the result in the CPU's registers or memory. The ALU is a critical component of the CPU and is responsible for performing the mathematical calculations required by software applications and operating systems.

Any storage device added to a computer beyond the immediately usable main storage is known as "secondary storage". Secondary storage devices are used to store data and programs that are not currently being used by the computer's processor, and can include hard disk drives, solid state drives, external hard drives, USB flash drives, memory cards, and optical storage devices like CDs, DVDs, and Blu-ray discs.

Unlike main memory (RAM), secondary storage devices retain data even when the computer is turned off, and are typically used for long-term storage of files and programs.

The list of coded instructions that a computer can understand and execute is called a "program" or "software". Programs are written in various programming languages such as C, C++, Java, Python, and many more. They are typically created by software developers or programmers using specialized development tools, and they contain a set of instructions that tell the computer what to do.

These instructions can include operations such as arithmetic and logic operations, input/output operations, control flow statements like loops and conditionals, and calls to other programs or functions. When a program is executed, the computer reads and interprets the instructions and carries out the desired operations.