ICSE Class 7 Computer Studies — Flashcards for Quick Revision

A: A computer system is a group of devices that work together. It includes a central processor, storage units, and peripheral devices such as a keyboard, monitor, printer, and scanner.

A: Data is raw facts and figures entered into a computer. Information is the useful output produced by the computer after processing data.

A: Hardware refers to the physical devices of a computer system. These are the parts that can be seen and touched, such as the keyboard, mouse, monitor, hard disk, and motherboard.

A: A computer system generally deals with four number systems: decimal, binary, octal, and hexadecimal.

A: A decimal number system uses all the digits from 0 to 9. It is a base-10 system and is the number system used by humans for most mathematics.

A: It is called a base-10 system because it uses 10 different digits: 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9.

A: Malware is software intentionally created to cause harm to a user, a computer system, or a network. It can damage files, interrupt work, or gain unauthorized access to computer resources.

A: A computer virus is a malicious program that can execute and replicate itself. It attaches to other programs, spreads without the user's knowledge, and causes damage to the system.

A: VIRUS stands for Vital Information Resources Under Siege. It is used as a name for harmful computer programs that attack important data and system resources.