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Know the Computer
Multimedia tools
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Computer essentials
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Computer essentials Hardware = physical component in the computer Software = is the programs or systems that is
operater within the hardware Peopleware
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Hardware
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MOTHER BOARD
Mother board is the heart of the computer. This component is the bigger part in the computer and every component attach into it someway. This is because all different component use motherboard to communicate and to work with each other.
Hardware
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Hardware
CPU (Central Processing Unit) Processes your instructions, performs calculation and
manages the flow of information through the computer Determine the speed by “clock speed” in MHz or GHz CPU is the brain of the computer that put in to the
Processor socket in motherboard
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Hardware
CPU (Central Processing Unit) Intel (Pentium 4, Celeron, Pentium D, Xeon) AMD 64, 64x2 G4,G5 Intel Core Duo, Core2Duo
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Hardware
Memory RAM (Random Access Memory)
– Volatile memory– Measure in megabytes (MB) or gigabytes (GB)
There have many kind of RAM- SD RAM-DDR 1-DDR 2-DDR 3 ( The Latest one)
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Hardware
Memory ROM (Read Only Memory)
– Non Volatile memory– For save data– Hard disk– CD, DVD disk– Flash Drive– Memory card (MMC, SD, CF, XD, MS etc.)
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Hardware
MemorySize of memory 8 bits (b) = 1 Bytes (B) 1024 B = 1 Kilobyte (KB) 1024 KB = 1 Megabyte (MB) 1024 MB = 1 Gigabyte (GB) 1024 GB = 1 Terabyte (TB)
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Hardware
Connection Port to connect with peripheral equipments
– SCSI (Small Computer System Interface)• Transfer up to 320 MB/second
– SATA (Serial ATA)• Transfer up to 150 MB/Second (SATA2 to 300MB/S)
– USB (Universal Serial Bus)• USB 1.1 transfer up to 12 Mbps• USB 2 transfer up to 480 Mbps
– FireWire (IEEE1394)• FireWire 400 (IEEE 1394a) up to 400 Mbps• FireWire 800 (IEEE 1394b) up to 800 Mbps
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Hardware
Link: http://www.refurbished-laptops.biz/laptop-ports/
SATA IDESATA
FireWire USB
Commonly use for connecting between Harddrive and Motherboard
Commonly use for connecting between Electric device and computer
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Hardware
Graphic Card Chipset inside the computer to connect with monitor to
show the output. Often on a special graphic card slot (AGP (Advanced
Graphic Port), PCI, PCI Express) Also have the CPU call GPU (Graphic Processor Unit)
Translate graphic and text onto the monitor screen
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Hardware
Audio Interface (Sound Card) Output the sound from computer Digital to Analog converter for audio Some can input the sound to computer (A/D Converter)
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Hardware
Output Devices Monitor
– CRT (Cathode Ray Tube)• Produced by electron beams sweeping
across the inside of a vacuum sealed glass tube
• Connect by VGA Port
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Hardware
Output Devices Monitor
– LCD (Liquid Crystal Display)• Each Pixel will produce a Red, Green or blue color
on the screen• Lower resolution than CRT but for new technology
are developed• Connect by DVI Port (Digital Visual Interface)
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HardwareOutput Devices Monitor
– Dot pitch is an indicator of the sharpness of the displayed image . It is measured in millimeters (mm), and a smaller number means a sharper image .
Dot PitchApprox. number of
pixels/cm2
Approx. number ofpixels/in
2
.25 mm 1,600 10,000
.26 mm 1,444 9,025
.27 mm 1,369 8,556
.28 mm 1,225 7,656
.31 mm 1,024 6,400
.51 mm 361 2,256
1 mm 100 625
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Hardware
Output Devices Printer
– Dot Matrix• Creates characters by striking pins against an ink ri
bbon. Each pin makes a dot , and combinations of d ots form characters and illustrations.
– Inkjet Printer• Sprays ink at a sheet of paper.• - produce high quality text and graphics.
– Laser Printer• Uses the same technology as copy machines.• produce very high quality text and graphics.
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Hardware
Input Devices Keyboard Mice Graphic Tablets Scanner Film Scanner Digital Camera
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Software
OS (Operating System) Windows (2000,XP) Macintosh (OS 9, OS X) Linux