Computer Hardware Devices Quiz

Input Output Devices

• A speaker is a device that connects to a computer to generate sound output.
• Some devices can be both input and output devices, such as a modem, which can be used to download information from websites and receive emails, as well as upload and send emails.

Storage Devices

• Secondary Memory is a Non-Volatile (Permanent until erased) Memory.
• Examples of storage devices include:
  • Internal Hard Disk
  • External Hard Disk
  • CD Drive
  • DVD Drive

Internal Hard Disk

• Resides inside the computer.
• Most computers come with a single internal hard drive, which includes the operating system and pre-installed applications.
• Capacity: Very high, now in excess of 500 GB.
• Cost: Falling rapidly, and normally the cheapest way of storing data.

External Hard Disk

• A portable storage device that can be attached to a computer through a USB.
• Capacity: Same as internal disks.
• Cost: More expensive than internal disks.

CD-ROM Drive and DVD-ROM

• CD-ROM Drive:
  • Much slower than hard disks.
  • Original CD-ROM specification was given a value of 1x speed.
  • Capacity: Around 650-700 Mbytes.
• DVD-ROM:
  • Much faster than CD-ROM drives but not as fast as hard disks.
  • Capacity: Up to 17 Gbytes.
  • Cost: Slightly higher than CD-ROM Drives.

Test your knowledge on computer hardware devices such as speakers, input/output devices, modems, and storage devices like hard disks and CD drives. Learn about the functions and characteristics of these essential components.