Chapter 2: Part 3: Output Devices and Their Uses

Front

Cathode ray tube (CRT) monitors:

Uses:

Back

• Their large screens allow complex diagrams to be created in Computer-aided design.

• Used with light pens to allow designs to be created.

Front

Cathode ray tube (CRT) monitors advantages:

Back

• Can be seen at a wider range of angles, unlike LCDs.

• Allow the use of light pens.

Front

Cathode ray tube (CRT) monitors disadvantages?:

Back

• They are very heavy and bulky.

• They run very hot and can cause fires if left unattended.

• They use a lot more power than LCDs.

• Their flickering can lead to headaches.

• Image burn-in is a common issue.

Front

Liquid Crystal Display (LCD) screens:

Uses:

Back

• Main output device for modern computers.

• Mobile phones, laptops, video games use LCD screens.

Front

Liquid Crystal Display (LCD) screens Advantages:

Back

• Very efficient, low power consumption.

• Lightweight devices.

• Screens can be made in various sizes.

• No flickering images.

• Very sharp image resolution.

Front

Touch screen (as an output devices):

Uses:

Back

• ATMs

• POS terminals

• Information kiosks.

Front

Touch screen (as an output devices) Advantages:

Back

• Don’t need additional input devices.

• They are very interactive, and many functions, such as swiping, can be done.

• They add a high-tech feel to devices and interfaces.

Front

Touch screen (as an output devices) Disadvantages:

Back

• They tend to get dirty with frequent use.

• Frequent use results in straining of arm muscles, RSI, etc.

• If large amounts of data are input/output, they aren’t very accurate, and the interface isn’t very fast.

Front

Multimedia projectors:

Uses:

Back

• Training presentations to allow the whole audience to see images.

• Advertising presentations.

• Home cinema systems.

Front

Multimedia projectors Advantages:

Back

• More people can watch as they don’t have to crowd around a laptop.

• Avoids the need for several networked computers.