Time
2 hours 16 minutes
Difficulty
Beginner
CEU/CPE
3

Video Description

Now that we've discussed connectors and cables, let's move on to examine another type of device connector and how they work. Parallel connectors, or LPT, which stands for Line Print terminal) or line printer cable, is a cable that is different on each end. One connector is DB25 port connector, that connects to the computer and the larger centronics connector is the plug/snap end connector that marries to the printer/peripheral device. Serial connections were mainly used before PS/2 connectors were invented but are still sometimes used today to connect routers and switches and firewalls. This connector is either a DB9 or DB25. They are usage specific which is determined according to their pin connection and wiring configuration Audio connectors and cabling is pretty standard. They are used for sound input/output and can be found on a host of different devices including speakers and headphones. Audio connectors come in the following capacities: the standard 1/8' stereo connection, the MIDI, which stands for musical instrument digital interface and similar to a DIM connector. The MIDI connector is found on computing devices to connect computing devices to electronics and musical devices such as electrical keyboards or drum sets. And last is the S/PDIF, which stands for Sony Phillips Digital Interface connector.It is a 1pin covered coax/optical connector used for transferring digital signals in light form.

Video Transcription

00:04
our next type connector that we want to cover is going to be our parallel connector, also known as R. L P T. Or our Brian Printer cable. This cable is going to look vastly different on either end. The end that plugs into our computer is going to be a D B 25 port connector. And on our other side we have what's called a sin tronics plug.
00:23
That's how we recognize our L. P T cable.
00:26
This was used for more than just printers. It still is used for many different devices. You just want to make sure that our big points for this cable par that we use our d B 25 on our computer side and we use our sin tronics connector on our device
00:45
or printer side.
00:46
And again, they look vastly different. D B 25 connector is just two rows multiple pins or is our sin tronics connectors of larger connector with
00:57
like a single blind with pins across a similar to our parallel cable or similar to R. L P T cable. We also have something called large zero connector. Our serial connector.
01:11
I was used
01:12
around the same time reference as our parallel connector. Our serial connector also connects many different types of devices, but it's actually simply a nine pin connector that looks similar to our V G. A cable connector. But it's actually bit different in a serial connector. Either use a D B nine port or D B 25
01:33
Port
01:33
nine being nine pins in 25 25 pens. And for a serial connector such as in the case with our d B nine on our computer end, it won't actually be the receiving whole ports. It'll be actually the male, and the computer actually has the pins on its end.
01:49
And then the cable, which plays into the computer as the receiving holes on its end.
01:53
Serial connectors are still used today for configuring different devices such as switches and routers by connecting to our computers. But the we can't just use any serial cable with our computer for a particular purpose. There are different serial cables, different ways that the
02:14
pins
02:15
connect on other, the other end of the cable to the other pins and the different wire arrangements. So we want to make sure that we're using that particular serial cable particular serial pin out for its right purpose, whether it be configured on configuring devices or using it, even for a mouse and keyboard, which they could still be used for
02:34
Now we're gonna move into the range of our audio devices.
02:37
Now we're talking about some of our audio cables. We have a couple different types. Swing. It's reference. This is just a standard of 1/8 and audio plug that you'll see most of the time on speakers, headphones, et cetera, and it will just fit into a standard one pin port. And we also have another connector known as our him
02:53
Hi di I connector. And this is for mostly musical devices. It stands for our musical instrument digital interface. It's similar to a
03:02
didn't connector, and it's used mostly to connect our computer to various musical devices such as Elektronik drum sets Or maybe you and keyboards that actually connect through this musical instrument
03:15
device digital interface. And they just connect straight there into our computer and in the last audio interface that were cover is going to be S P D I. F Sony Philips Digital interface. It can use either a co axel connector It's a standard one pin koh axel connector,
03:34
and you may also see it with a square optical connector. The flap on the front of spring loaded
03:38
You don't want to try to push that open and look directly into it because it does use optical light and in order to transfer information. So that is why it's covered. And it does have its counterpart, the co axel connector, which can also be used.

Up Next

Peripheral Devices and Connectors

A peripheral device or auxiliary device, is generally defined as any device that connects to and works with the computer in some way

Instructed By

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Anthony Harris
Systems Analyst and Administrator at SAIC
Instructor