Computer Fundamentals and System Concepts

Ports are the physical interfaces on a computer that allow for the connection and communication of external accessories.

The power button on the front of a CPU case is the primary switch used to send a signal to the power supply unit to turn on the computer.

PS/2, COM1, and COM2 are standard legacy ports found on older motherboards. OS/2 is an operating system, not a hardware port.

A computer's power consumption is generally comparable to that of a standard electric fan. It is significantly lower than high-draw appliances like geysers or air conditioners.

LED indicators are typically located on the front panel of a CPU box to show power and drive activity. The rear panel contains ports and power sockets.

The chassis is the physical frame or housing that encloses the components of a computer. It is the structural mainframe of the system.

If software is not optimized for high core counts, adding more cores provides diminishing returns or overhead that can lead to performance stagnation or slight decreases.

E-Scan, Avast, and AVG are all well-known antivirus software programs.

All-in-one (AIO) desktop computers integrate the CPU and display into a single unit to save space.

BIOS stands for Basic Input Output System, which is the firmware used to perform hardware initialization during the booting process.

The hard disk is the primary internal storage device located inside the CPU cabinet. Other options like CDs or floppy disks are removable media.

In the computing cycle, input is the data provided, processing is the action taken, and output is the final result presented to the user.

The Central Processing Unit (CPU) is responsible for interpreting and executing instructions, making it the brain of the computer. CU, MU, and ALU are internal components of the CPU.

A computer virus is a type of malicious software designed to replicate and damage files or the system. Bacteria and insects are biological terms.