Computer Knowledge

 

1.What is computer?

Ans. Computer is an electronic device and a programmable machine which works according to the functions and commands given by the users.

2. Parts of Computer?

Ans.1.RAM                                         2.Hard Disk

        3.CPU                                           4.Mother Board

        5.SMPS                                        6.UPS

        7.LAN                                           8.IDE Cable

        9.Sata Cable                              10.DVD-ROM

3.Types of Storage Devices/Media?

•             Floppy

•             CD (Compact Disk)

•             DVD (Digital Video Disk)

•             BD (Blu-Ray Disk)

•             HDD (Hard Disk)

•             PD (Pen Drive)

•             SD Card (Secure Digital Card)

4.Size Of Media?

•             Floppy = 1.44 MB To 4 MB

•             CD            = 700 MB

•             DVD         = 4.7 GB To 8.5 GB

•             BD            = 20 GB To 80 GB

•             Pen Drive= 512 MB To 256 GB+

•             SD Card = 512 MB To 256 GB+

5.Types Of Devices?

•             Input Device

•             Output Device

•             I/O Devices(Input/output Devices)

Input Device: -

•             Web Cam

•             Mouse

•             Scanner

•             Bar-Code Reader

•             Keyboard

Output Device: -

•             Monitor

•             Speakers

•             Printers

•             Headphones

•             Projector

I/O Device:-

•             Touch Screen

•             Modem

•             FAX Machine

•             Earphone