Computer Science

AND, OR, XOR, NOT, NAND, and NOR are all types of logic gates used in digital circuits to perform logical operations on one or more binary inputs.

A dedicated computer is designed to perform one specific task or function only, unlike general-purpose computers that can run multiple types of software and tasks. This specialization allows for optimized performance for that single task.

Microcomputers are typically designed for single-user operation and cannot support multiple users simultaneously, unlike minicomputers and mainframe computers which are designed to handle multiple users.

Microcomputers, also known as personal computers, are commonly used in small organizations due to their affordability, ease of use, and sufficient processing power for typical business tasks. Mainframes and supercomputers are generally used by large organizations or for specialized tasks.

Machine language is the only language that a computer's hardware can directly understand and execute. Assembly language is a low-level language that needs to be translated into machine language. PHP is a high-level programming language that requires interpretation or compilation.

John Backus led the team at IBM that developed the FORTRAN programming language in 1957, making him the correct answer. The other individuals are notable computer scientists but were not responsible for creating FORTRAN.

BASIC stands for Beginners All-Purpose Symbolic Instruction Code and is a programming language designed for ease of use by beginners. It is not software, software coding in general, or a basic course in computers.

The language of a computer, particularly machine language, consists of instructions that have two main parts: the opcode, which specifies the operation to be performed, and the operand, which specifies the data or the address of the data. Therefore, both opcode and operand together form the language of a computer.

Machine language and assembly language are both considered low-level programming languages because they are closely related to the hardware and provide little abstraction from the computer's instruction set architecture. Therefore, 'Both A & B' is the correct answer.

Embedded computers are specialized computing systems designed to perform dedicated functions within larger devices. Examples of embedded computers include DVD players, washing machines, and smartwatches, as all these devices contain embedded processors that control their specific functions. A USB drive, however, is primarily a storage device and does not contain an embedded computer. Therefore, options A (DVD Player), C (Washing Machine), and D (Smartwatch) are all examples of embedded computers. Since the question asks for examples (plural), the best answer includes all valid embedded computer examples. However, given the single correct answer format, the DVD player (option A) is a classic and widely recognized example of an embedded computer.