The speaker is the output device to enable the voice.

Date: 2015-10-07; view: 543.

Keyboard is used to type data into computer.

The printer can print images or files.

Users take pictures with digital camera. It is stored in digital form, and can be uploaded onto a computer.

Examples: Digital camera, printer, speaker, keyboard.

Paint, Photoshop, CorelDraw

1. I/O

a. Define I/O device.

Input/Output or I/O is the communication between an information processing system (such as a computer) and the outside world, possibly a human or another information processing system.

b. Consider that a computer requires I/O devices to be able to interact with its environment. Explain why it is necessary for computers to have these devices.

c. Give four examples of I/O devices.

d. For each I/O device in your answer to part c, explain the device's function from the perspective of a user.

1. Magnetic Media

a. List two advantages of magnetic media over optical media.

Magnetic disks, with the exception of floppy disks, can be written and read faster than optical disks. Most hard disk drives offer greater capacity than any currently available optical device. And usually the writable of magnetic disks is unlimited.

More space than optical.

b. Fill in the following chart matching the type of media with its storage capacity. The types of media to choose from are Jaz disk, Zip disk, hard disk drive, high-density floppy disk, and double density floppy disk.

c.

d. Consider that magnetic media is read by an electromagnet. How does the read/write head discern and transfer data from the magnetic media to the system?

1. Moore's Law

a. Define Moore's Law.