System Components

System Components in CompTIA A+ refer to the essential hardware and software parts that make up a computer system. Central Processing Unit (CPU): The brain of the computer that processes instructions. Key specifications include cores, clock speed (measured in GHz), cache size, and socket type. Motherboard: The main circuit board connecting all components. Features include form factor (ATX, micro-ATX), chipset, expansion slots (PCIe, PCI), and socket type which must match the CPU. Random Access Memory (RAM): Temporary storage for running programs. Specifications include type (DDR4, DDR5), capacity, speed, and form factor (DIMM for desktops, SO-DIMM for laptops). Storage devices: Hard Disk Drives (HDDs) offer high capacity at lower cost, while Solid State Drives (SSDs) provide faster performance. M.2 and NVMe drives offer even greater speeds. Power Supply Unit (PSU): Converts AC power to DC power for components. Important specifications include wattage rating, efficiency certification (80+ Bronze/Silver/Gold), and modularity. Cooling systems: Heat sinks, fans, and liquid cooling solutions that maintain safe operating temperatures. Expansion cards: Graphics Processing Units (GPUs), sound cards, network interface cards that add functionality. Input/Output interfaces: USB ports, audio jacks, display connections (HDMI, DisplayPort, VGA, DVI). Firmware: BIOS/UEFI that initializes hardware during boot and provides configuration options. Peripherals: Keyboards, mice, monitors, printers, and other external devices. Case/chassis: Houses and protects internal components while facilitating airflow. CompTIA A+ certification tests technical understanding of how these components work together, compatibility requirements, installation procedures, and troubleshooting methodologies when components malfunction.

System Components in CompTIA A+ refer to the essential hardware and software parts that make up a computer system. Central Processing Unit (CPU): The brain of the computer that processes instructio…

Concepts covered: Motherboard, Optical Drives, Graphics Processing Unit (GPU), Power Supply Unit (PSU), Expansion Cards, Input/Output (I/O) Devices, Cooling System, Random Access Memory (RAM), Hard Disk Drive (HDD) and Solid State Drive (SSD), Central Processing Unit (CPU)