Chapter04 - Discovering Computers 2009 Chapter 4 The...

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Discovering Computers 2009 Chapter 4 The Components of the System Unit
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Chapter 4 Objectives 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 Identify characteristics of various personal computer processors on the market today Define a bit and describe how a series of bits represents data Explain how programs transfer in and out of memory Differentiate among the various types of memory Describe the types of expansion slots and adapter cards Explain the differences among a serial port, a parallel port, a USB port, a FireWire port, and other ports Describe how buses contribute to a computer’s processing speed Identify components in mobile computers and mobile devices Next Understand how to clean a system unit
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The System Unit What is the system unit ? p. 184 Fig. 4-1 Next Ø Case that contains electronic components of the computer used to process data § Sometimes called the chassis
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The System Unit What are common components inside the system unit? p. 185 Fig. 4-2 Next Ø Memory Ø Adapter cards § Sound card § Video card Ø Drive bays Ø Power supply Ø Processor
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The System Unit What is the motherboard ? p. 186 Fig. 4-3 Next Ø Main circuit board of the system unit Ø Contains expansion slots, processor chips, and memory slots Ø Also called system board Click to view Web Link, click Chapter 4, Click Web Link from left navigation, then click Motherboards below Chapter
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The System Unit What is a chip ? p. 186 Next Ø Small piece of semi-conducting material on which integrated circuits are etched § Integrated circuits contain many microscopic pathways capable of carrying electrical current Ø Chips are packaged so that they can be attached to a circuit board
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Processor (ALU) Arithmetic Logic Unit (ALU) Processor What is the central processing unit (CPU) ? p. 186 - 187 Fig. 4- 4 Next Input Devices Storage Devices Output Devices Ø Interprets and carries out basic instructions that operate a computer Memo ry D at a In fo r m at io n Instructions Data Information Instructions Data Information Control Unit § Control unit directs and coordinates operations in computer § Arithmetic logic unit (ALU) performs arithmetic, comparison, and logical operations Ø Also called the processor
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Processor What are multi-core processors ? p. 187 Next Ø A multi-core processor is a chip with two or more separate processors Ø A dual-core processor is a single chip that contains two separate processors Ø A quad-core processor is a single chip that contains four separate processors Ø Each processor on a multi-core chip generally runs at a slower clock speed, but increases overall performance Click to view Web Link, click Chapter 4, Click Web Link from left navigation, then click Quad-Core Processors below Chapter 4
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Processor Control Unit Memory ALU Processor What is a machine cycle?
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Chapter04 - Discovering Computers 2009 Chapter 4 The...

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