Explanation

• CPU processes instructions, performs calculations, and controls computer operations.
• The CPU is the main processing unit of a computer.
• It is often called the “brain of the computer.”
• The CPU includes major components such as the ALU, Control Unit, and registers.

Last verified on 24-08-2026

Explanation

• Primary storage, also known as main storage or memory.
• It is the area in a computer in which data is stored for quick access by the computer's processor.
• The terms random access memory (RAM) and memory are often as synonyms for primary or main storage.

Last verified on 10-08-2026

Explanation

• RAM (Random Access Memory) is installed on the motherboard of a computer.
• RAM is usually placed in DIMM slots on desktop motherboards.
• RAM temporarily stores data and programs currently being used by the CPU.
• RAM is volatile memory, meaning its contents are lost when power is turned off.

Last verified on 10-08-2026

Explanation

• A collection of system programs that controls and coordinates the overall operations of a computer system is called an Operating System.
• An Operating System (OS) manages the computer’s hardware and software resources.
• It controls CPU, memory, files, input/output devices, and running programs.
• It provides an interface between the user and computer hardware.
• Examples include Windows, Linux, macOS, Android, and iOS.

Last verified on 10-08-2026

Explanation

• A standard single-sided, single-layer DVD holds 4.7 GB of data.
• A double-layer DVD can store up to 9.4 GB.
• A single-layer HD-DVD holds 15 GB of data.
• A dual-layer HD-DVD provides up to 30 GB of storage capacity.

Last verified on 10-08-2026

Explanation

• Multi-tasking provides process and memory management services that allow two or more tasks, jobs, or programs to run simultaneously.
• The operating system manages CPU time, memory, and other resources among the running tasks.

Additional information:

• Multiprocessing refers to using two or more processors/CPU cores to execute processes.
• Multithreading allows multiple threads within a process to execute concurrently.
• Multicomputing involves using multiple separate computers or computing systems.

Last verified on 10-08-2026

Explanation

• Charles Babbage's computer was called the Analytical Engine.
• He was an English mathematician, inventor, and mechanical engineer.
• He designed the Analytical Engine, a general-purpose mechanical computer concept.
• Babbage worked on the Analytical Engine during the 19th century until his death in 1871.
• The Analytical Engine was designed to perform calculations and follow programmed instructions.
• Charles Babbage is widely known as the “Father of the Computer.”

Last verified on 10-08-2026

Explanation

• Memory (RAM): Temporary, volatile, fast access
• Storage (HDD/SSD): Permanent, non-volatile, slower than RAM
• Example Memory: RAM in computers (4GB, 8GB, 16GB)
• Example Storage: Hard disk, SSD (256GB, 512GB, 1TB)
• Purpose: Memory = active tasks, Storage = long-term data

Last verified on 17-01-2026

Explanation

• Data is permanently stored in the Hard Disk.
• A hard disk is a secondary storage device used to store data for long-term use.
• Data remains stored even when the computer is turned off.

Additional information:

• RAM → Temporary/volatile memory
• Cache → High-speed temporary memory
• Bus → Transfers data, addresses, and control signals

Last verified on 08-08-2026

Explanation

• The standard arrangement of keys on a keyboard is called the QWERTY arrangement.
• The name QWERTY comes from the first six letters in the top alphabetic row: Q, W, E, R, T, Y.
• It was developed from the keyboard layout used in early typewriters.
• QWERTY became the most widely used keyboard layout.

Last verified on 07-08-2026