Computer Fundamentals and System Concepts

Computer architecture refers to the conceptual design and fundamental operational structure of a computer system. It defines how the various components, such as the CPU, memory, and I/O, are organized and interconnected.

In machine code, an instruction is typically divided into an opcode (operation code) and an operand (address). The opcode specifies the action to be performed by the processor.

Off-line operation refers to the processing of data by peripheral devices without direct, real-time intervention or control by the central processing unit (CPU). This allows the CPU to perform other tasks while data is being prepared or transferred.

A memory-resident program is software that remains in the primary storage (RAM) after it has been loaded, allowing for quick access. This is common for system utilities or drivers.

The microprocessor (CPU) is the central component of a PC that executes instructions and performs the primary processing tasks, effectively serving as the brain of the computer.

The power supply unit (PSU) is a separate component that converts mains AC to low-voltage regulated DC power for the internal components of the computer; it is not a part of the motherboard itself.

A computer virus is a type of malicious software that, when executed, replicates itself by modifying other computer programs and inserting its own code.

Booting is the process of starting a computer, which involves loading the operating system and executing pre-scheduled startup commands.

Bootstrapping is the initialization process that starts a computer system. It involves loading the operating system into memory after the power is turned on.

The UNIVAC I (Universal Automatic Computer I) was the first general-purpose electronic digital computer design for business and administrative use to be produced in the United States.

Operating systems manage hardware and software resources, but providing data like trigonometric tables is an application-level task, not a core OS function.

Silicon is a semiconductor material widely used in the manufacturing of computer chips and integrated circuits.

The Central Processing Unit (CPU) is the brain of the computer that performs the actual processing, which includes transforming input data into meaningful output.

Device drivers are small, special-purpose software programs that act as translators between the operating system and hardware devices, enabling them to communicate effectively.