Week Two Lecture - A+ Guide to Managing and Maintaining...

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A+ Guide to Managing and Maintaining Your PC, 7e Chapter 1 Introducing Hardware
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A+ Guide to Managing and Maintaining Your PC, 7e 2 Objectives Learn that a computer requires both hardware and software to work Learn about the many different hardware components inside of and connected to a computer
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A+ Guide to Managing and Maintaining Your PC, 7e 3 Hardware Needs Software to Work Hardware – Computer’s physical components • Monitor, keyboard, memory, hard drive Software – Instruction set • Directs hardware to accomplish a task – Uses hardware for four basic functions • Input, processing, storage, output Hardware components – Require an electrical system
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A+ Guide to Managing and Maintaining Your PC, 7e 4 Hardware Needs Software to Work (cont’d.) User interaction with computer – User and software communicate with input device – Hardware uses two states: on and off Figure 1-2 All communication, storage, and processing of data inside a computer are in binary form until presented as output to the user Courtesy: Course Technology/Cengage Learning
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Hardware Needs Software to Work (cont’d.) Binary number system – Used for counting, calculation, storage operations – Stores and reads two states • Zero or one – Bit: binary digit • Value of zero or one – Crumb: two bits – Nibble: four bits – Byte: eight bits A+ Guide to Managing and Maintaining Your PC, 7e 5
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A+ Guide to Managing and Maintaining Your PC, 7e 6 PC Hardware Components Input/output (I/O) devices: external to the case Processing, storage devices: internal to the case Central processing unit (CPU) – Also called: processor, microprocessor – Reads input, processes data, writes data to storage Elements required by I/O, storage devices – Method for CPU to communicate with the device – Software to instruct, control the device – Electricity to power the device
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A+ Guide to Managing and Maintaining Your PC, 7e 7 Hardware Used for Input and Output I/O device communication with computer components – Wireless – Cabled using a port • Access point located in back or front of case Primary input devices – Keyboard, mouse • Requires electricity from inside case Primary output devices – Monitor: visually displays primary computer output – Printer: produces paper output (hard copy)
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Hardware Inside the Computer Case Storage and processing occurs in the case Internal devices common to most computers – Motherboard containing CPU, memory, other parts – Hard drive, optical drive for permanent storage – Power supply with power cords supplying electricity – Adapter cards for internal and external communication – Cables to connect devices Adapter card installed in expansion slots A+ Guide to Managing and Maintaining Your PC, 7e 8
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A+ Guide to Managing and Maintaining Your PC, 7e 9 Figure 1-8 Inside the computer case Courtesy: Course Technology/Cengage Learning
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This note was uploaded on 04/05/2011 for the course CINT 210 taught by Professor Endris during the Spring '11 term at Ivy Tech Community College.

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Week Two Lecture - A+ Guide to Managing and Maintaining...

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