Question Discussion & Solution

The correct answer is Paint Brush.

Key Points

• BASIC:
  • This programming language was first designed by John G. Kemeny and Thomas E. Kurtz in 1964.
  • The full form of BASIC is - Beginner's All-Purpose Symbolic Instruction Code.
  • It is generally used for scientific and engineering operations.
  • The introduction of newer machines with far greater capabilities made this language nearly obsolete and its upgraded version called Visual BASIC was released by Microsoft in 1991.
• ​C++:
  • ​The programming language was created by Bjarne Stroustrup in the mid-1980s as an extension to the C language.
  • It is an object-oriented language having two main components - direct mapping of hardware and zero-overhead abstractions.
  • The other languages like Java etc were influenced by C++.
• ​JAVA:
  • ​The programming language was designed by James Gosling at Sun Microsystems and was first released in the year 1995.
  • Java language is not platform-dependent and can be used to develop android applications.
  • The most recent version of Java, i.e. Java SE 16 got released in March 2021.
• PAINT BRUSH:
  • Paint is software that enables users to create basic graphic art on their systems.
  • The software has been developed by Microsoft and is found in all the versions of Microsoft Windows.
  • Recently in April 2021, Microsoft has made Microsoft Paint updateable from the Microsoft Store.

The correct answer is option 3 i.e ​Ctrl + Z.

• Ctrl + Z is the shortcut key to undo an action in MS Word.
• Ctrl+W is the shortcut key to close the current window.
• Ctrl+B is the shortcut key to Bold highlighted text.
• Ctrl + U is the shortcut key to underline a text.

The correct answer is Microcomputers.

Key Points

• Microcomputers generally have the least processing and storage capacity.
• A microcomputer is a complete computer on a small scale, designed for use by one person at a time.
• An antiquated term, a microcomputer is now primarily called a personal computer (PC), or a device based on a single-chip microprocessor.
• Common microcomputers include laptops and desktops.

Additional Information

• A mainframe computer informally called a mainframe or big iron is a computer used primarily by large organizations for critical applications, bulk data processing. 
• A supercomputer is a computer with a high level of performance as compared to a general-purpose computer. 
• A minicomputer is a type of computer that possesses most of the features and capabilities of a large computer but is smaller in physical size.

The correct answer is Motherboard.

Key Points

• The motherboard allows communication to and between the CPU, RAM, and all other computer hardware components.
• A motherboard (also called mainboard, main circuit board, system board, baseboard, planar board, logic board, or mobo) is the main printed circuit board (PCB) in general-purpose computers and other expandable systems.
• It holds and allows communication between many crucial electronic components of a system, such as the central processing unit (CPU) and memory, and provides connectors for other peripherals. 

Additional Information

• Application software is a type of computer program that performs a specific personal, educational, and business function.
• System software is a type of computer program that is designed to run a computer's hardware and application programs.
• A central processing unit (CPU), also called a central processor, main processor, or just processor is the electronic circuitry that executes instructions comprising a computer program.

The correct answer is Central Processing Unit.

Key Points

• Central Processing Unit (CPU): It is the most important unit, where all the processing jobs take place. CPU is the control centre of the computer and hence it is said to be the brain of the computer.

Additional Information 

• CPU has three main components:
  • Arithmetic Logic Unit (ALU): It performs all the arithmetic operations like addition (+), multiplication (*), subtraction (-), division (/) on the numerical data directed by the control unit. All the logical operations, like less than (<), greater than (>), equal to (=), not equal to (≠) etc. are also carried out by ALU.
  • Control Unit (CU): It controls and coordinates all the operations taking place in the system. It controls the flow of data and information from one unit to the other.
  • Registers/Memory Unit (MU): To execute a program, data and instructions need to be stored temporarily. This storage is done in the MU. The data and instructions are retrieved from MU by Control Unit for supplying to ALU as when required by the program.