Discovering Computers - Chapter 4: The Components of the System Unit Differentiate among various styles of system units; Identify chips, adapter cards, and other components of a motherboard; Describe the components of a processor and how they complete a machine cycle. | Chapter 4 The Components of the System Unit Chapter 4 Objectives Differentiate among various styles of system units Differentiate among the various types of memory Identify chips, adapter cards, and other components of a motherboard Describe the types of expansion slots and adapter cards Describe the components of a processor and how they complete a machine cycle Explain the differences among a serial port, a parallel port, a USB port, a FireWire port, and other ports Identify characteristics of various personal computer processors on the market today Describe how buses contribute to a computer’s processing speed Define a bit and describe how a series of bits represents data Identify components in mobile computers and mobile devices Explain how programs transfer in and out of memory Understand how to clean a system unit Next The System Unit What is the system unit? Case that contains electronic components of the computer used to process data p. 184 Fig. 4-1 Sometimes called the chassis Next The System Unit What are common components inside the system unit? power supply Processor Memory Adapter cards drive bays Sound card Video card processor ports memory Ports Drive bays Power supply video card p. 185 Fig. 4-2 sound card Next The System Unit What is the motherboard? Main circuit board in system unit Contains adapter cards, processor chips, and memory chips Also called system board Click to view Web Link, click Chapter 4, Click Web Link from left navigation, then click Motherboards below Chapter p. 186 Fig. .