Input and Output Devices

Which device scans images, documents and saves them on a computer as a digital image?

• Printer

• Scanner

• Joystick

• Opto-mechanical Mouse

The disk that uses blue violet laser to read and write is?

• DVD

• CD-R

• Blu-ray Disk

• Memory Stick

The speed of a dot-matrix printer is measured in

Which one of the following is an output device?

• speakers

• DVD

• Mouse

• Scanner

the printers that allow physical impact between the printer head and the paper are called

A thermal printer uses

• heat sensitive paper

• spray ink

• all of the above

• photocopy technology

the keys that are uset to perform specific tasks are

mouse was invented by

• Douglas Engelbart

• Sir Christopher Latham Sholes

• Gary Starkweather

• James T Russell

A hard Disk is also known as a

the full form of DVD-RW is