HARDWARE
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HARDWARE. ฮาร์ดแวร์. หมายถึง ส่วนที่เป็นตัวเครื่องคอมพิวเตอร์และอุปกรณ์ประกอบต่าง ๆ ที่ต่อเข้ากับเครื่องคอมพิวเตอร์ สามารถสัมผัสและมองเห็น. องค์ประกอบทางด้านฮาร์ดแวร์. หมายถึง องค์ประกอบของตัวเครื่องที่สามารถจับต้องได้ แบ่งเป็น 5 หน่วยที่สำคัญ ดังนี้. หน่วยรับข้อมูล (Input Unit)

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HARDWARE

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HARDWARE



5

  • (Input Unit)

  • (Memory Unit)

  • (Central Processing Unit :CPU)

  • (Secondary Storage)

  • (Output Unit)


(Input Unit)

(Input Unit)



  • (Keyed Device)


  • (Keyboard)

  • (Charater Keys)

  • (Control Keys)

  • (Function Keys)

  • (Numeric Keys)


2) (Pointing Devices)

  • (Mouse)


  • (Track ball),

    (Track point),

    (Touch pad)


  • (Joystick)


  • (Touch-Sensitive Screen)

  • (Touch Screen)

: ,


  • (Light pen)

4) (Pen-Based System)

(CAD

Computer Aided Design ) PDA


  • (Digitizing tablet)

Stylus CAD


() ()


  • (Data Scanning Devices)

  • (MICR)

    • MICR MICR


  • (Bar Code Reader)

.


  • (Scanner)

(Handheld scanner)

(sheetfed scanner)

(flatbed scanner)


  • ()

  • () ()


  • (Optical Character Recognition - OCR)


  • (Optical Mark Reader-OMR)


  • (Digital Camera)


6) (Voice Recognition Device)

  • (Speech Recognition Device)


(Memory Unit)

(Memory Unit)

2


  • (Read Only Memory)

(ROM)


  • PROM (Programmable Read-Only Memory)

  • EPROM (Erasable PROM)

  • EEPROM (Electrically Erasable PROM)


2) (Random Access Memory)

(Ram)


  • DRAM (Dynamic RAM)

    :

    :

  • SRAM (Static RAM)

    : SRAM

    :


(CPU)

( CPU : Central Processing Unit ) 2


1. (Control Unit)



2) (Arithmetic and Logic Unit)

(ALU)


(Register)

(Bus)


2


..


  • (CRT)


  • (LCD)

Passive Matrix

Active Matrix


(Super VGA)

800x600

1024x768, 1600x1200


14 15 17 (CAD/CAM)


) (Projector)


) (Audio Output)

(speaker) (sound card)


2.


(Printer)

  • (Impact Printer)

  • (Dot Matrix Printers) 9 24


(Printer)

(Line Printers)


(Printer)

  • (Nonimpact Printer)

    - (Ink-Jet Printers)


(Printer)

- (Laser Printer)


) (Plotler)


(Secondary Storage Unit)

  • (Tape)


(Megnetic Tape)

(play) (record) (read) (write)


(Megnetic Disk)

(direct access) (disk drive)


platters 1


3.5 5.25 ()


  • (CD-ROM)

600- 750

(dictionary)


  • (DVD)

    4.7


(Mobile Disk)

USB Port 16 MB Flash Memory, Mobile Disk, Memory Stick, Pen Drive, Mini Drive


Blu-ray Disc (BD)

DVD Blu-ray high-definition video (HD) DVD Blu-ray single-layer 25GB double-layer 50GB Blu-ray DVD


Blu-ray Disc (BD)

Blu-ray - DVD - 405nm 650nm Blu-ray 9 double-layer DVD 23


Blu-ray Disc (BD)


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