input and output

Input....what is input...input is a
ØData or instructions entered into the memory of computer
ØInput device is any hardware component that allows users to enter data and instructions

examples of input devices......

• keyboard
• mouse (optical-trackball)
• touchpad
• poointing stick
• pen ( digital-light)
• touchscreen
• games controller.....
• ext.....

voice input?
ØEntering input by speaking into a microphone
ØVoice recognition or speech recognition is thecomputer’s capability to distinguish spoken words

audio input?
ØEntering sounds into a computer - speech,music, and sound effects
ØMIDI - standard defining how digital musicaldevices represent sound electronically

other types of input.....

• smart phone
• tablet pc
• digital camera
• resolution
• video input
• scanner
• PC camera - web cam
• readers.....
• ext......

If there are an input...must be an output too.....

output.....

• Data that has been processed into a useful form
• Output device is any hardware component that can convey information to one or more people

the output devices...

• display devices

1. monitor
2. LCD monitor
3. plasma monitor
4. CRT monitor

• Printer

1. nonimpact
2. laser
3. photo
4. thermal
5. mobile
6. plotter
7. impact

Other output devices......

• audio output device

ØComputer component that produces music, speech, or other sounds

ØSpeakers, earphones, and earbuds are common devices

• voice output

ØComputer talks to you through speakers on computer
ØInternet telephony allows you to have conversationover the Internet

• FAX
• multifunction peripheral
• data projector

Generally........

output and input are very important in computer system...it help to make the users more easier in order to explore the computer.....