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What is the difference between D subminiature and VGA

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Infra Red

Infra red is a method of tranferring data without the use of wires. It is a type of electromagnetic radiation. It is also part of EM Spectrum that people encounter most in everyday life. Infr red is invisible to human eyes, but it can be feel as heat. Infra red waves are longer than those of visible light, just beyond the infra red end of the visible spectrum. It falls in the range of the EM Spectrum between microwaves and visible light. The frequencies are from about 3GHz to about 400THz and its wavelengths are 30cm(12inches) to 740 nanometers(0.00003 inches)

Example are TV Remote and also used in computers and devices like a cordless keyboard or mouse.

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It is a common type of electrical connector. It was named for their characteriatic D shaped metal shield.
Contain two or more parallel rows of pins or sockets.

It work with a wide variety of electronics. It create connections between different products such as computers, printers and power supply unit.

Examples of D subminiature:
DB-25 used for the printer port on the PC.
DB-15 used for game port on PC.

It is used at anyplace such as school or office. Like printing paper work.

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What is Disadvantage of Mini-DIN~

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is there any mouse and keyboard that still uses Mini-DIN as it's Connectors

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Why do we use centronics and what is the importance of the centronics?

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Why do we use centronics and what is the importance of the centronics?

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What?
- Connectors are a family of multi-pin electrical connectors used in variety of applications

why?
- for connecting keyboards and Mouse

When?
- Every time we decided to use our computer

Where?
- Behind the CPU

How?
- Connected to the motherboard through adapter card

Different kinds of ports?
- Purple is for Keyboard
- Green is for Mouse

I) mini-DIN 3
ii) mini-DIN 4
iii) mini-DIN 5
iv) mini-DIN 6
v) mini-DIN 8
vi) mini-DIN 9
vii) mini-DIN 7 & 9
viii) mini-DIN 6 & 8

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What is the most commonly used diameter for audio jack?

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What is the most commonly used diameter for audio jack?

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Centronics is a Standards 36-pin parallel-port connection between a computer and printer.

It was release in 1970 and developed by Centronics Printer Company.

Types of Centronics:

- IBM

- Bi-Tronics

- EPP and ECP

- Dataproducts

Question :
1. what does EPP and ECP stands for?

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Rj series ports is a port that connects voice and data equipment to a service provided by a company telecommunication.
It is used to establish a universal standard for wiring & interfaces to seperate ownership of in home or in office telephone wiring from the service provider.
We need to use the phone or access a particular network.
We connect the modular connector into the rj series port to gain access to the network.
We have two different types of rj series:
1)rj 11-the most commonly recognized to connect to the telephone line.
2) rj 14- same as rj 11 but has two lines for wiring.

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What will happen if a USB is used on a power bank?

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What will happen if a USB is used on a power bank?

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- to transfer data

2 types:
- 2.0 (Hi-speed USB)
- 3.0

differents:
- faster
- 3.0 is 10 times faster than 2.0

It can connect  up to 127 different peripherals together with a single connector.

PCs typically have six to eight USB ports on the front and/or back of the system unit while laptop have 3 to 4 USB ports.

USB can be storage device such as pendrives.

Questions:
1. How many USB are there?
2. Which is more faster?
3. How many USB ports are there on a Desktop?

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what is the use of IEEE 1394?

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IEEE 1394, High Performance Serial Bus, is an electronics standard for connecting devices to your personal computer. IEEE 1394 provides a single plug-and-socket connection on which up to 63 devices can be attached with data transfer speeds up to 400

Mbps (

megabit s per second).~

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A computer's audio ports link the computer's sound hardware with your speakers, microphone, headsets or other audio equipment. Every computer motherboard has at least a few basic audio ports built in, allowing you to connect stereo speakers and a microphone. Higher-end motherboards and computers with discrete audio cards include additional ports for connecting surround-sound speakers or external sound system

Question:
1. What colour do we use for headset?
2. which colour do we use for mic?
3. what is rear for