Olympiad Test Level 1: Hardware & Software - 1 - Class 3 MCQ

A hard disk drive can be found inside laptops and desktop computers.

Computer hardware is the collection of physical parts of a computer system. This includes the computer case, monitor, keyboard, hard disk drive, motherboard, video card, RAM, mouse and speaker. Computer hardware is what you can physically touch. Whereas, Windows is a group of several graphical operating system software families, all of which are developed, marketed, and sold by Microsoft. So we can say windows is not hardware.

The full form of CD is Compact disc. It is a digital optical disc data storage format
that was co-developed by Philips and Sony and released in 1982. The format was originally developed to store and play only sound recordings (CD-DA) but was later adapted for storage of data (CD-ROM).

A monitor is a hardware device that displays images, videos, and other content from a computer. It is similar to a TV screen and is used to visually present the output of the computer's operations.

Hardware refers to the actual physical components of a computer, such as the monitor, keyboard, CPU, motherboard, and other devices.
Software (Option C) refers to the programs and applications that run on the hardware.
CPU (Option B) is a part of the hardware, but it is not the only physical component.
Input-output (Option D) refers to processes or devices used for input and output, like the keyboard or printer.

Memory in this context refers to the computer's RAM (Random Access Memory), which is often considered hardware. However, software like operating systems or applications use memory. But in this question, it's meant as a trick since all the other options (CPU, monitor, and mouse) are physical hardware devices.

The microprocessor is the main hardware part of a computer, also known as the brain of the computer. It performs all the processing tasks and executes instructions. The mouse, keyboard, and monitor are peripheral devices used for input and output, but they do not handle the core processing functions of the computer.

A CD drive is the hardware used to read information from a CD (Compact Disc). The other options are used for different purposes:

• Floppy drive (Option A) is used for reading from floppy disks, which are outdated.
• Pen drive (Option B) is used for reading and writing data to USB flash drives.
• Motherboard (Option C) is the main circuit board of the computer and does not directly read CDs.

A computer program is a sequence of instructions for performing a task designed to solve specific problems. Each program instruction is designed to be executable by a computer. So we can say Software is a program that works in a computer.

The printer is the odd one out because it is an output device used to produce physical copies of documents, while the other components (monitor, CPU/system unit, RAM, mouse, and keyboard) are primarily involved in input, processing, or displaying information on the computer system.