Q. What is a computer?
Ans. A computer is an electronic device that accepts data, processes it according to instructions, stores it, and produces information.
Q. What are the main functions of a computer?
Ans. The main functions are input, processing, output, and storage.
Q. What is data?
Ans. Data is a collection of raw facts and figures that can be processed by a computer.
Q. What is information?
Ans. Information is processed data that is meaningful and useful.
Q. What is hardware?
Ans. Hardware refers to the physical components of a computer, such as the keyboard, monitor, CPU, and mouse.
Q. What is software?
Ans. Software is a collection of programs and instructions that tell a computer what to do.
Q. What is the CPU?
Ans. CPU stands for Central Processing Unit. It executes instructions and controls computer operations.
Q. What are the main components of a CPU?
Ans. The main components are the Arithmetic Logic Unit (ALU), Control Unit (CU), and registers.
Q. What is an input device?
Ans. An input device is used to enter data and instructions into a computer. Examples include a keyboard, mouse, and scanner.
Q. What is an output device?
Ans. An output device presents processed information to the user. Examples include a monitor, printer, and speakers.
Q. What is memory in a computer?
Ans. Computer memory stores data, instructions, and results needed for processing.
Q. What is RAM?
Ans. RAM stands for Random Access Memory. It is generally volatile memory that loses its contents when power is switched off.
Q. What is ROM?
Ans. ROM stands for Read-Only Memory. It stores instructions that are retained without normal power supply.
Q. What is an operating system?
Ans. An operating system is system software that manages hardware, files, memory, processes, and other computer resources.
Q. What is the difference between hardware and software?
Ans. Hardware consists of physical components, whereas software consists of programs and instructions.
Q. What is a storage device?
Ans. A storage device saves data and files for later use. Examples include HDDs, SSDs, memory cards, and pen drives.
Q. What is the difference between primary and secondary memory?
Ans. Primary memory is directly accessible for current processing, while secondary storage retains data for long-term use.
Q. What is booting?
Ans. Booting is the process of starting a computer and loading the operating system.
Q. What is the difference between an analog and a digital computer?
Ans. An analog computer processes continuously varying quantities, while a digital computer processes discrete data, typically in binary form.
Q. What are the main characteristics of a computer?
Ans. Important characteristics include speed, accuracy, automation, storage capacity, diligence, and versatility.