PC Types & Functions Lesson 2. List all the different types of computer devices that you use. ...
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Transcript of PC Types & Functions Lesson 2. List all the different types of computer devices that you use. ...
![Page 1: PC Types & Functions Lesson 2. List all the different types of computer devices that you use. Briefly describe what you use each device for.](https://reader036.fdocuments.us/reader036/viewer/2022062322/5697c00d1a28abf838cc9334/html5/thumbnails/1.jpg)
Advanced Computer Applications
PC Types & Functions
Lesson 2
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List all the different types of computer devices that you use.
Briefly describe what you use each device for.
DO NOW 9/8
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Identify the different computer types.
Define the four basic computer functions.
Describe computer input devices.
Understand the functions of a CPU.
OBJECTIVES
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“Computer” suggests computation or calculator
Electronic device that can manipulate data
Many have to do with numbers or math
The Computer
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Most familiar is the PCIndirect contact with other, larger computers
Supercomputer - science, mathematics, advanced computing, or military or industrial researchFastest problem solvers available (high speed)Process data in “parallel”
Computer Types
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Very powerful
Hundreds of people can use a mainframe at once
PCs or “dumb” terminals
Mainframes
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Smaller processing & storage management than mainframesAccessed also from dumb terminals or PC’sDistinction between the two has broken down in recent years (growth of the PC)
1. Computer chips/storage capacities have increased rapidly
2. Networking
Minicomputers
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Desktop Computer
Laptop
PDA (Personal Digital Assistant)
Computer Types
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Smartphone
E-reader
Tablet
Computer Types
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INPUT
KeyboardMouse
ScannerVoice
Microphone
PROCESSING
CPURAMROM
OUTPUT
PRINTER MONITOR
STORAGE
CD-ROMCD-RW
CD-DVDDISKETTES
FLASH DRIVESHARD DRIVE
TAPE
Four Basic Functions:
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KeyboardStandardized layout
Some change the location of certain keys or include keys that other keyboards do not
Special keys (Function, Ctrl, Alt)
Input Devices
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Mouse
Control a pointer that displays on the monitor
Input Devices
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ScannersCreate files from pictures or textOptical Character Recognition (OCR)
Voice input Microphones
Input Devices
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CPU – (Central Processing Unit) Brain of the computer
Control Unit ALU Registers
PC Internal Components
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CPU
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Controls and coordinates program instructions & processing of data
Determines which devices have access to various parts of the system
Tell the ALU and registers how to operate, what to operate on, and what to do with the result
Control Unit
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Performs and controls all arithmetic and logical operationsRelieves the control unit of most of the arithmetic functions
Performs +, -, *, /Logic commands: AND, OR, and NOT
Takes data from registers
Arithmetic Logic Unit
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Storage area for data used by the ALU
Complete the tasks by the Control Unit
Data stored at special locations within the Registers
Retrieval for the ALU quick and efficient
Registers
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Where programs and data reside while in use
Excel example
Saving a document: RAM to permanent storage
Loss of power information in RAM is lostRAM capacity is measured in megabytes
Random Access Memory (RAM)
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Memory read from but not written to
Non-volatile memory
Computer start-up (BIOS, CMOS, POST)
ROM access slower than RAM
Read Only Memory (ROM)
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Work on your projects with your partner. Due Thursday 9/11
Famous Persons in Computer History
Directions