Basic information of computer

 

                                                  

WHAT IS COMPUTER

The computer is a programmable electronic device designed to accept data perform prescribed mathematical and logical operations at high speed, and display the results of these operations. Mainframes, desktop and laptop computers, tablets, and smartphones are some of the different types of computers; compare analog computer digital computer

THE TWO TYPES OF COMPUTER STRUCTURE

·      HARDWARE

·      SOFTWARE

OPERATING SYSTEM                    LAUNCH DATE

• WINDOWS 1.0                      1985

• WINDOWS  2.0                     1987

• WINDOWS 3.0                      1990

• WINDOWS 95                       1995

• WINDOWS ME                     2000

• WINDOWS 2000(TWO THOUSAND)  2000    

·      WINDOWS XP                    25 OCTOBER 2001

·      WINDOWS VISTA             NOVEMBER 2006

·      WINDOWS 7                      22 JULY 2009

·      WINDOWS 8                      26 OCTOBER 2012

·      WINDOWS 8.1                   27 AUGUST 2013

·      WINDOWS 10                    29 JULY 2015

BASIC COMPUTER DEVICES

·      INPUT DEVICE

1.               Keyboard

2.               Mouse

3.                Joystick.docx

4.               Light pen

5.               Trackball

6.               Scanner

7.               Graphic tablet

8.               Microphone

9.               Magnetic ink card reader(MICR)

10.        Optical character reader(OCR)

11.        Bar code reader

12.        Optical mark reader(omr)

1.       OUTPUT DEVICE

1. Monitor

2. Printer

3. Headphones

4. Computer speakers

5. Projector

6. GPS

7. Sound card

8. Video card

9. Braille reader

10. Speech-generating device

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PARTS OF MOTHERBOARD

1.       MOTHERBOARD

2.       SERIAL PORT

3.      CPU

4.      PARALLEL PORT

5.      LAN CABLE PORT

6.      CMOS BATTERY

7.      AGP SLOT

8.      HEAT SINK

9.      RAM SLOT

PARTS OF CPU

2.       MAINBOARD

3.       RAM MODULES

4.       HARDDISK

5.       DVD-ROM-DRIVE

6.       POWER SUPPLY

7.       SOUND DRIVE

8.       VGA CARD

9.       CPU FAN

10.                FLOOP DISK

EXTERNAL PARTS OF CPU

11.                OPTICAL DRIVE

12.                USB PORTS

13.                MICROPHONE JACK

14.                HEADPHONE JACK

15.                RESET BUTTON

16.                      POWER SWITCH