Figure 1-2 Inside the computer case A+ Guide to Managing & Maintaining Your PC, 8th Edition

Figure 1-18 This MicroATX motherboard by Biostar is designed to support an AMD processor A+ Guide to Managing & Maintaining Your PC, 8th Edition

Figure 4-3 A Mini-ITX motherboard A+ Guide to Managing & Maintaining Your PC, 8th Edition

processor for all components Figure 4-10 The chipset’s North Bridge and South Bridge control access to the processor for all components A+ Guide to Managing & Maintaining Your PC, 8th Edition

Buses and Expansion Slots System of pathways used for communication Carried by bus: Power, control signals, memory addresses, data Data and instructions exist in binary Only two states: on and off Data path size: width of a data bus Examples: 8-bit bus has eight wire (lines) to transmit A+ Guide to Managing & Maintaining Your PC, 8th Edition

by the CPU and other devices as bits Figure 4-16 A data bus has traces or lines that carry voltage interpreted by the CPU and other devices as bits A+ Guide to Managing & Maintaining Your PC, 8th Edition

Buses and Expansion Slots System clock (system timer) – times activities on the motherboard Speed of memory, Front Side Bus, processor, or other component is measured in hertz (Hz), which is one cycle per second Megahertz (MHz): one million cycles per second Gigahertz (GHz): one billion cycles per second Motherboards can have more than one bus Table 3-4 on the following slide lists many buses A+ Guide to Managing & Maintaining Your PC, 8th Edition

Figure 4-21 Three types of PCIe slots and one conventional PCI slot A+ Guide to Managing & Maintaining Your PC, 8th Edition

What’s Inside the Case Expansion cards - also called adapter cards A circuit board that provides more ports than those provided by the motherboard Today, most ports are provided by motherboards Figure 1-4 Ports provided by a motherboard A+ Guide to Managing & Maintaining Your PC, 8th Edition

What’s Inside the Case Memory modules – random access memory (RAM) Temporary storage for data and instructions as they are being processed by the CPU Dual inline memory module (DIMM) slots hold memory modules Figure 1-6 A DIMM holds RAM and is mounted directly on a motherboard A+ Guide to Managing & Maintaining Your PC, 8th Edition

Drives, Their Cables, and Connectors Hard Drives Two standards: Serial ATA standard (SATA) Used by most drives today Parallel ATA (PATA) – slower than SATA Also called IDE interface Uses 40-pin ribbon cable and connector Two connectors on a motherboard for two data cables Accommodates up to four IDE devices Uses a 4-pin power connector called a Molex power connector A+ Guide to Managing & Maintaining Your PC, 8th Edition